diff --git a/.github/contributing.md b/.github/contributing.md new file mode 100644 index 0000000..6cf9168 --- /dev/null +++ b/.github/contributing.md @@ -0,0 +1,17 @@ +# Bugs, Questions, and Feature Requests + +Report bugs, ask questions, and request features using [GitHub Issues](https://github.com/cferdinandi/smooth-scroll/issues). + +**Before posting, do a search to make sure your issue or question hasn't already been reported or discussed.** If no matching issue exists, go ahead and create one. + +**Please be sure to include all of the following:** + +1. A clear, descriptive title (ie. "A bug" is not a good title). +2. [A reduced test case.](https://css-tricks.com/reduced-test-cases/) + - Clearly demonstrate the bug or issue. + - Include the bare minimum HTML, CSS, and JavaScript required to demonstrate the bug. + - A link to your production site is **not** a reduced test case. + - You can create one by [forking this CodePen](https://codepen.io/cferdinandi/pen/RqGLpz). +3. The browser and OS that you're using. + +Duplicates and issues without a reduced test case may be closed without comment. \ No newline at end of file diff --git a/.github/issue_template.md b/.github/issue_template.md new file mode 100755 index 0000000..664bfaa --- /dev/null +++ b/.github/issue_template.md @@ -0,0 +1,3 @@ + + +**Test case:** https://codepen.io/cferdinandi/pen/RqGLpz \ No newline at end of file diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml new file mode 100644 index 0000000..42b06b4 --- /dev/null +++ b/.github/workflows/push.yml @@ -0,0 +1,13 @@ +on: push +name: publish on release +jobs: + publish: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@master + - name: publish + uses: actions/npm@master + env: + NPM_AUTH_TOKEN: ${{ secrets.NPM_AUTH_TOKEN }} + with: + args: publish diff --git a/.travis.yml b/.travis.yml index 83be3c0..09ce0fd 100755 --- a/.travis.yml +++ b/.travis.yml @@ -1,6 +1,6 @@ language: node_js node_js: - - "0.10" + - "7" before_script: - npm install -g gulp script: gulp \ No newline at end of file diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md deleted file mode 100755 index c3863d1..0000000 --- a/CONTRIBUTING.md +++ /dev/null @@ -1,39 +0,0 @@ -# How to contribute - -I'm delighted that you're helping make this open source project better. Here are a few quick guidelines to make this an easier and better process for everyone. - - - -## Reporting a bug - -First, **make sure the bug hasn't already been reported** by searching GitHub's issues section. - -If no existing issue exists, go ahead and create one. **Please be sure to include all of the following:** - -1. A clear, descriptive title (ie. "A bug" is *not* a good title). -2. [A reduced test case.](https://css-tricks.com/reduced-test-cases/) In order to debug code issues, I need to see actual code in a browser. -3. The browser and OS that you're using. - - - -## Asking a question - -Before asking, please **make sure the question hasn't already been asked** by searching GitHub's issues section. - - - -## Submitting a Pull Request - -Please make sure your code meets the following code standards: - -- Camel case for JavaScript variables. -- [Object-Oriented CSS](http://www.slideshare.net/stubbornella/object-oriented-css) for CSS selectors. -- Favor readable code over brevity. The build process will reduce size, so opt for readability. (ex. `var navigation` is better than `var n`) -- Order CSS properties alphabetically. -- Hard tabs. - -Before submitting, make sure that you've: - -- Updated the version number using semantic versioning. -- Made your changes in the `src` folder. -- Run the Gulp build to compile, minify, and update version numbers into the `dist` folder. If you cannot do this, please note this in the Pull Request. \ No newline at end of file diff --git a/README.md b/README.md index 510fee9..ed77c95 100755 --- a/README.md +++ b/README.md @@ -1,8 +1,32 @@ +**DEPRECATION NOTICE:** + +Smooth Scroll is, without a doubt, my most popular and widely used plugin. + +But in the time since I created it, a CSS-only method for smooth scrolling has emerged, and now has fantastic browser support. It can do things this plugin can't (like scrolling to anchor links from another page), and addresses bugs and limitations in the plugin that I have never gotten around to fixing. + +This plugin has run its course, and the browser now offers a better, more feature rich and resilient solution out-of-the-box. + +Learn [how to animate scrolling to anchor links with one line of CSS](https://gomakethings.com/how-to-animate-scrolling-to-anchor-links-with-one-line-of-css/), and [how to prevent anchor links from scrolling behind fixed or sticky headers](https://gomakethings.com/how-to-prevent-anchor-links-from-scrolling-behind-a-sticky-header-with-one-line-of-css/). + +Thanks for the years of support! + +--- + # Smooth Scroll [![Build Status](https://travis-ci.org/cferdinandi/smooth-scroll.svg)](https://travis-ci.org/cferdinandi/smooth-scroll) A lightweight script to animate scrolling to anchor links. Smooth Scroll works great with [Gumshoe](https://github.com/cferdinandi/gumshoe). -[Download Smooth Scroll](https://github.com/cferdinandi/smooth-scroll/archive/master.zip) / [View the demo](http://cferdinandi.github.io/smooth-scroll/) +**[View the Demo on CodePen →](https://codepen.io/cferdinandi/pen/wQzrdM)** + +[Getting Started](#getting-started) | [Scroll Speed](#scroll-speed) | [Easing Options](#easing-options) | [API](#api) | [What's new?](#whats-new) | [Known Issues](#known-issues) | [Browser Compatibility](#browser-compatibility) | [License](#license) + +*__Quick aside:__ you might not need this library. There's [a native CSS way to handle smooth scrolling](https://gomakethings.com/smooth-scrolling-links-with-only-css/) that might fit your needs.* + + +
+ +### Want to learn how to write your own vanilla JS plugins? Check out my [Vanilla JS Pocket Guides](https://vanillajsguides.com/) or join the [Vanilla JS Academy](https://vanillajsacademy.com) and level-up as a web developer. 🚀 +
## Getting Started @@ -11,149 +35,253 @@ Compiled and production-ready code can be found in the `dist` directory. The `sr ### 1. Include Smooth Scroll on your site. -```html - -``` +There are two versions of Smooth Scroll: the standalone version, and one that comes preloaded with polyfills for `closest()`, `requestAnimationFrame()`, and `CustomEvent()`, which are only supported in newer browsers. -### 2. Add the markup to your HTML. +If you're including your own polyfills or don't want to enable this feature for older browsers, use the standalone version. Otherwise, use the version with polyfills. -Turn anchor links into Smooth Scroll links by adding the `[data-scroll]` data attribute. Give the anchor location an ID just like you normally would. +**Direct Download** + +You can [download the files directly from GitHub](https://github.com/cferdinandi/smooth-scroll/archive/master.zip). ```html -Anchor Link -... -Bazinga! + ``` -### 3. Initialize Smooth Scroll. +**CDN** -In the footer of your page, after the content, initialize Smooth Scroll. And that's it, you're done. Nice work! +You can also use the [jsDelivr CDN](https://cdn.jsdelivr.net/gh/cferdinandi/smooth-scroll/dist/). I recommend linking to a specific version number or version range to prevent major updates from breaking your site. Smooth Scroll uses semantic versioning. ```html - -``` + + + + + + + + + + + +``` +**NPM** -## Installing with Package Managers +You can also use NPM (or your favorite package manager). -You can install Smooth Scroll with your favorite package manager. +```bash +npm install smooth-scroll +``` -* **[NPM](https://www.npmjs.org/):** `npm install cferdinandi/smooth-scroll` -* **[Bower](http://bower.io/):** `bower install https://github.com/cferdinandi/smooth-scroll.git` -* **[Component](http://component.io/):** `component install cferdinandi/smooth-scroll` +### 2. Add the markup to your HTML. +No special markup needed—just standard anchor links. Give the anchor location an ID just like you normally would. +```html +Anchor Link +... +
Bazinga!
+``` -## Working with the Source Files +***Note:*** *Smooth Scroll does not work with `` style anchors. It requires IDs.* -If you would prefer, you can work with the development code in the `src` directory using the included [Gulp build system](http://gulpjs.com/). This compiles, lints, and minifies code. +### 3. Initialize Smooth Scroll. -### Dependencies -Make sure these are installed first. +In the footer of your page, after the content, initialize Smooth Scroll by passing in a selector for the anchor links that should be animated. And that's it, you're done. Nice work! -* [Node.js](http://nodejs.org) -* [Gulp](http://gulpjs.com) `sudo npm install -g gulp` +```html + +``` -### Quick Start +***Note:*** *The `a[href*="#"]` selector will apply Smooth Scroll to all anchor links. You can selectively target links using any other selector(s) you'd like. Smooth Scroll accepts multiple selectors as a comma separated list. Example: `'.js-scroll, [data-scroll], #some-link'`.* -1. In bash/terminal/command line, `cd` into your project directory. -2. Run `npm install` to install required files. -3. When it's done installing, run one of the task runners to get going: - * `gulp` manually compiles files. - * `gulp watch` automatically compiles files when changes are made and applies changes using [LiveReload](http://livereload.com/). +## Scroll Speed -## Options and Settings +Smooth Scroll allows you to adjust the speed of your animations with the `speed` option. -Smooth Scroll includes smart defaults and works right out of the box. But if you want to customize things, it also has a robust API that provides multiple ways for you to adjust the default options and settings. +This a number representing the amount of time in milliseconds that it should take to scroll 1000px. Scroll distances shorter than that will take less time, and scroll distances longer than that will take more time. The default is 300ms. -### Global Settings +```js +var scroll = new SmoothScroll('a[href*="#"]', { + speed: 300 +}); +``` -You can pass options and callbacks into Smooth Scroll through the `init()` function: +If you want all of your animations to take exactly the same amount of time (the value you set for `speed`), set the `speedAsDuration` option to `true`. -```javascript -smoothScroll.init({ - selector: '[data-scroll]', // Selector for links (must be a class, ID, data attribute, or element tag) - selectorHeader: null, // Selector for fixed headers (must be a valid CSS selector) [optional] - speed: 500, // Integer. How fast to complete the scroll in milliseconds - easing: 'easeInOutCubic', // Easing pattern to use - offset: 0, // Integer. How far to offset the scrolling anchor location in pixels - callback: function ( anchor, toggle ) {} // Function to run after scrolling +```js +// All animations will take exactly 500ms +var scroll = new SmoothScroll('a[href*="#"]', { + speed: 500, + speedAsDuration: true }); ``` -***Note:*** *To programatically add Smooth Scroll to all anchor links on a page, pass `selector: 'a[href^="#"]'` into `init`.* -#### Easing Options +## Easing Options + +Smooth Scroll comes with about a dozen common easing patterns. [Here's a demo of the different patterns.](https://codepen.io/cferdinandi/pen/jQMGaB) **Linear** *Moves at the same speed from start to finish.* -* `Linear` +- `Linear` **Ease-In** *Gradually increases in speed.* -* `easeInQuad` -* `easeInCubic` -* `easeInQuart` -* `easeInQuint` +- `easeInQuad` +- `easeInCubic` +- `easeInQuart` +- `easeInQuint` **Ease-In-Out** *Gradually increases in speed, peaks, and then gradually slows down.* -* `easeInOutQuad` -* `easeInOutCubic` -* `easeInOutQuart` -* `easeInOutQuint` +- `easeInOutQuad` +- `easeInOutCubic` +- `easeInOutQuart` +- `easeInOutQuint` **Ease-Out** *Gradually decreases in speed.* -* `easeOutQuad` -* `easeOutCubic` -* `easeOutQuart` -* `easeOutQuint` +- `easeOutQuad` +- `easeOutCubic` +- `easeOutQuart` +- `easeOutQuint` -Learn more about the different easing patterns and what they do at [easings.net](http://easings.net/). +You can also pass in your own custom easing pattern [using the `customEasing` option](#global-settings). -### Override settings with data attributes +```js +var scroll = new SmoothScroll('a[href*="#"]', { + // Function. Custom easing pattern + // If this is set to anything other than null, will override the easing option above + customEasing: function (time) { -Smooth Scroll also lets you override global settings on a link-by-link basis using the `[data-options]` data attribute. + // return -```html - - Anchor Link - + // Example: easeInOut Quad + return time < 0.5 ? 2 * time * time : -1 + (4 - 2 * time) * time; + + } +}); +``` + + + +## API + +Smooth Scroll includes smart defaults and works right out of the box. But if you want to customize things, it also has a robust API that provides multiple ways for you to adjust the default options and settings. + +### Options and Settings + +You can pass options and callbacks into Smooth Scroll when instantiating. + +```javascript +var scroll = new SmoothScroll('a[href*="#"]', { + + // Selectors + ignore: '[data-scroll-ignore]', // Selector for links to ignore (must be a valid CSS selector) + header: null, // Selector for fixed headers (must be a valid CSS selector) + topOnEmptyHash: true, // Scroll to the top of the page for links with href="#" + + // Speed & Duration + speed: 500, // Integer. Amount of time in milliseconds it should take to scroll 1000px + speedAsDuration: false, // If true, use speed as the total duration of the scroll animation + durationMax: null, // Integer. The maximum amount of time the scroll animation should take + durationMin: null, // Integer. The minimum amount of time the scroll animation should take + clip: true, // If true, adjust scroll distance to prevent abrupt stops near the bottom of the page + offset: function (anchor, toggle) { + + // Integer or Function returning an integer. How far to offset the scrolling anchor location in pixels + // This example is a function, but you could do something as simple as `offset: 25` + + // An example returning different values based on whether the clicked link was in the header nav or not + if (toggle.classList.closest('.my-header-nav')) { + return 25; + } else { + return 50; + } + + }, + + // Easing + easing: 'easeInOutCubic', // Easing pattern to use + customEasing: function (time) { + + // Function. Custom easing pattern + // If this is set to anything other than null, will override the easing option above + + // return + + // Example: easeInOut Quad + return time < 0.5 ? 2 * time * time : -1 + (4 - 2 * time) * time; + + }, + + // History + updateURL: true, // Update the URL on scroll + popstate: true, // Animate scrolling with the forward/backward browser buttons (requires updateURL to be true) + + // Custom Events + emitEvents: true // Emit custom events + +}); ``` -***Note:*** *You must use [valid JSON](http://jsonlint.com/) in order for the `data-options` feature to work. Does not support the `callback` method.* +### Custom Events + +Smooth Scroll emits three custom events: + +- `scrollStart` is emitted when the scrolling animation starts. +- `scrollStop` is emitted when the scrolling animation stops. +- `scrollCancel` is emitted if the scrolling animation is canceled. + +All three events are emitted on the `document` element and bubble up. You can listen for them with the `addEventListener()` method. The `event.detail` object includes the `anchor` and `toggle` elements for the animation. + +```js +// Log scroll events +var logScrollEvent = function (event) { + + // The event type + console.log('type:', event.type); + + // The anchor element being scrolled to + console.log('anchor:', event.detail.anchor); + + // The anchor link that triggered the scroll + console.log('toggle:', event.detail.toggle); + +}; -### Use Smooth Scroll events in your own scripts +// Listen for scroll events +document.addEventListener('scrollStart', logScrollEvent, false); +document.addEventListener('scrollStop', logScrollEvent, false); +document.addEventListener('scrollCancel', logScrollEvent, false); +``` + +### Methods -You can also call Smooth Scroll's scroll animation events in your own scripts. +Smooth Scroll also exposes several public methods. #### animateScroll() Animate scrolling to an anchor. ```javascript -smoothScroll.animateScroll( - anchor, // Node to scroll to. ex. document.querySelector( '#bazinga' ) - toggle, // Node that toggles the animation, OR an integer. ex. document.querySelector( '#toggle' ) +var scroll = new SmoothScroll(); +scroll.animateScroll( + anchor, // Node to scroll to. ex. document.querySelector('#bazinga') + toggle, // Node that toggles the animation, OR an integer. ex. document.querySelector('#toggle') options // Classes and callbacks. Same options as those passed into the init() function. ); ``` @@ -161,31 +289,45 @@ smoothScroll.animateScroll( **Example 1** ```javascript -var anchor = document.querySelector( '#bazinga' ); -smoothScroll.animateScroll( anchor ); +var scroll = new SmoothScroll(); +var anchor = document.querySelector('#bazinga'); +scroll.animateScroll(anchor); ``` **Example 2** ```javascript -var anchor = document.querySelector( '#bazinga' ); +var scroll = new SmoothScroll(); +var anchor = document.querySelector('#bazinga'); var toggle = document.querySelector('#toggle'); var options = { speed: 1000, easing: 'easeOutCubic' }; -smoothScroll.animateScroll( anchor, toggle, options ); +scroll.animateScroll(anchor, toggle, options); ``` **Example 3** ```javascript // You can optionally pass in a y-position to scroll to as an integer -smoothScroll.animateScroll( 750 ); +var scroll = new SmoothScroll(); +scroll.animateScroll(750); +``` + +#### cancelScroll() +Cancel a scroll-in-progress. + +```javascript +var scroll = new SmoothScroll(); +scroll.cancelScroll(); ``` +***Note:*** *This does not handle focus management. The user will stop in place, and focus will remain on the anchor link that triggered the scroll.* + #### destroy() -Destroy the current `smoothScroll.init()`. This is called automatically during the `init` function to remove any existing initializations. +Destroy the current initialization. This is called automatically in the `init` method to remove any existing initializations. ```javascript -smoothScroll.destroy(); +var scroll = new SmoothScroll(); +scroll.destroy(); ``` @@ -201,45 +343,29 @@ If you have multiple fixed headers, pass in the last one in the markup. ... ``` -### Animating links to other pages - -This is an often requested feature, but Smooth Scroll does not include an option to animate scrolling to links on other pages. -You can attempt to implement it using the API, but it's very difficult to prevent the automatic browser jump when the page loads, and anything I've done to work around it results in weird, janky issues, so I've decided to leave this out of the core. Here's a potential workaround... -1. Do *not* add the `data-scroll` attribute to links to other pages. Treat them like normal links, and include your anchor link hash as normal. +## What's new? - ```html - - ``` -2. Add the following script to the footer of your page, after the `smoothScroll.init()` function. +Scroll duration now varies based on distance traveled. If you want to maintain the old scroll animation duration behavior, set the `speedAsDuration` option to `true`. - ```html - - ``` -## Browser Compatibility +## Known Issues -Smooth Scroll works in all modern browsers, and IE 9 and above. +### Reduce Motion Settings -Smooth Scroll is built with modern JavaScript APIs, and uses progressive enhancement. If the JavaScript file fails to load, or if your site is viewed on older and less capable browsers, anchor links will jump the way they normally would. +This isn't really an "issue" so-much as a question I get a lot. +Smooth Scroll respects [the `Reduce Motion` setting](https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-reduced-motion) available in certain operating systems. In browsers that surface that setting, Smooth Scroll will not run and will revert to the default "jump to location" anchor link behavior. -## Known Issues +I've decided to respect user preferences of developer desires here. This is *not* a configurable setting. ### `` styling @@ -249,11 +375,27 @@ If the `` element has been assigned a height of `100%` or `overflow: hidde Animated scrolling links at the very bottom of the page (example: a "scroll to top" link) will stop animated almost immediately after they start when using certain easing patterns. This is an issue that's been around for a while and I've yet to find a good fix for it. I've found that `easeOut*` easing patterns work as expected, but other patterns can cause issues. [See this discussion for more details.](https://github.com/cferdinandi/smooth-scroll/issues/49) +### Scrolling to an anchor link on another page + +This, unfortunately, cannot be done well. + +Most browsers instantly jump you to the anchor location when you load a page. You could use `scrollTo(0, 0)` to pull users back up to the top, and then manually use the `animateScroll()` method, but in my experience, it results in a visible jump on the page that's a worse experience than the default browser behavior. + + + +## Browser Compatibility + +Smooth Scroll works in all modern browsers, and IE 9 and above. + +Smooth Scroll is built with modern JavaScript APIs, and uses progressive enhancement. If the JavaScript file fails to load, or if your site is viewed on older and less capable browsers, anchor links will jump the way they normally would. + +*__Note:__ Smooth Scroll will not run—even in supported browsers—if users have `Reduce Motion` enabled. [Learn more in the "Known Issues" section.](#reduce-motion-settings)* +### Polyfills -## How to Contribute +Support back to IE9 requires polyfills for `closest()`, `requestAnimationFrame()`, and `CustomEvent()`. Without them, support starts with Edge. -Please review the [contributing guidelines](CONTRIBUTING.md). +Use the included polyfills version of Smooth Scroll, or include your own. diff --git a/dist/js/smooth-scroll.js b/dist/js/smooth-scroll.js deleted file mode 100755 index 0c5ca7d..0000000 --- a/dist/js/smooth-scroll.js +++ /dev/null @@ -1,583 +0,0 @@ -/*! - * smooth-scroll v10.2.1: Animate scrolling to anchor links - * (c) 2016 Chris Ferdinandi - * MIT License - * http://github.com/cferdinandi/smooth-scroll - */ - -(function (root, factory) { - if ( typeof define === 'function' && define.amd ) { - define([], factory(root)); - } else if ( typeof exports === 'object' ) { - module.exports = factory(root); - } else { - root.smoothScroll = factory(root); - } -})(typeof global !== 'undefined' ? global : this.window || this.global, (function (root) { - - 'use strict'; - - // - // Variables - // - - var smoothScroll = {}; // Object for public APIs - var supports = 'querySelector' in document && 'addEventListener' in root; // Feature test - var settings, anchor, toggle, fixedHeader, headerHeight, eventTimeout, animationInterval; - - // Default settings - var defaults = { - selector: '[data-scroll]', - selectorHeader: null, - speed: 500, - easing: 'easeInOutCubic', - offset: 0, - callback: function () {} - }; - - - // - // Methods - // - - /** - * Merge two or more objects. Returns a new object. - * @private - * @param {Boolean} deep If true, do a deep (or recursive) merge [optional] - * @param {Object} objects The objects to merge together - * @returns {Object} Merged values of defaults and options - */ - var extend = function () { - - // Variables - var extended = {}; - var deep = false; - var i = 0; - var length = arguments.length; - - // Check if a deep merge - if ( Object.prototype.toString.call( arguments[0] ) === '[object Boolean]' ) { - deep = arguments[0]; - i++; - } - - // Merge the object into the extended object - var merge = function (obj) { - for ( var prop in obj ) { - if ( Object.prototype.hasOwnProperty.call( obj, prop ) ) { - // If deep merge and property is an object, merge properties - if ( deep && Object.prototype.toString.call(obj[prop]) === '[object Object]' ) { - extended[prop] = extend( true, extended[prop], obj[prop] ); - } else { - extended[prop] = obj[prop]; - } - } - } - }; - - // Loop through each object and conduct a merge - for ( ; i < length; i++ ) { - var obj = arguments[i]; - merge(obj); - } - - return extended; - - }; - - /** - * Get the height of an element. - * @private - * @param {Node} elem The element to get the height of - * @return {Number} The element's height in pixels - */ - var getHeight = function ( elem ) { - return Math.max( elem.scrollHeight, elem.offsetHeight, elem.clientHeight ); - }; - - /** - * Get the closest matching element up the DOM tree. - * @private - * @param {Element} elem Starting element - * @param {String} selector Selector to match against - * @return {Boolean|Element} Returns null if not match found - */ - var getClosest = function ( elem, selector ) { - - // Element.matches() polyfill - if (!Element.prototype.matches) { - Element.prototype.matches = - Element.prototype.matchesSelector || - Element.prototype.mozMatchesSelector || - Element.prototype.msMatchesSelector || - Element.prototype.oMatchesSelector || - Element.prototype.webkitMatchesSelector || - function(s) { - var matches = (this.document || this.ownerDocument).querySelectorAll(s), - i = matches.length; - while (--i >= 0 && matches.item(i) !== this) {} - return i > -1; - }; - } - - // Get closest match - for ( ; elem && elem !== document; elem = elem.parentNode ) { - if ( elem.matches( selector ) ) return elem; - } - - return null; - - }; - - /** - * Escape special characters for use with querySelector - * @private - * @param {String} id The anchor ID to escape - * @author Mathias Bynens - * @link https://github.com/mathiasbynens/CSS.escape - */ - var escapeCharacters = function ( id ) { - - // Remove leading hash - if ( id.charAt(0) === '#' ) { - id = id.substr(1); - } - - var string = String(id); - var length = string.length; - var index = -1; - var codeUnit; - var result = ''; - var firstCodeUnit = string.charCodeAt(0); - while (++index < length) { - codeUnit = string.charCodeAt(index); - // Note: there’s no need to special-case astral symbols, surrogate - // pairs, or lone surrogates. - - // If the character is NULL (U+0000), then throw an - // `InvalidCharacterError` exception and terminate these steps. - if (codeUnit === 0x0000) { - throw new InvalidCharacterError( - 'Invalid character: the input contains U+0000.' - ); - } - - if ( - // If the character is in the range [\1-\1F] (U+0001 to U+001F) or is - // U+007F, […] - (codeUnit >= 0x0001 && codeUnit <= 0x001F) || codeUnit == 0x007F || - // If the character is the first character and is in the range [0-9] - // (U+0030 to U+0039), […] - (index === 0 && codeUnit >= 0x0030 && codeUnit <= 0x0039) || - // If the character is the second character and is in the range [0-9] - // (U+0030 to U+0039) and the first character is a `-` (U+002D), […] - ( - index === 1 && - codeUnit >= 0x0030 && codeUnit <= 0x0039 && - firstCodeUnit === 0x002D - ) - ) { - // http://dev.w3.org/csswg/cssom/#escape-a-character-as-code-point - result += '\\' + codeUnit.toString(16) + ' '; - continue; - } - - // If the character is not handled by one of the above rules and is - // greater than or equal to U+0080, is `-` (U+002D) or `_` (U+005F), or - // is in one of the ranges [0-9] (U+0030 to U+0039), [A-Z] (U+0041 to - // U+005A), or [a-z] (U+0061 to U+007A), […] - if ( - codeUnit >= 0x0080 || - codeUnit === 0x002D || - codeUnit === 0x005F || - codeUnit >= 0x0030 && codeUnit <= 0x0039 || - codeUnit >= 0x0041 && codeUnit <= 0x005A || - codeUnit >= 0x0061 && codeUnit <= 0x007A - ) { - // the character itself - result += string.charAt(index); - continue; - } - - // Otherwise, the escaped character. - // http://dev.w3.org/csswg/cssom/#escape-a-character - result += '\\' + string.charAt(index); - - } - - return '#' + result; - - }; - - /** - * Calculate the easing pattern - * @private - * @link https://gist.github.com/gre/1650294 - * @param {String} type Easing pattern - * @param {Number} time Time animation should take to complete - * @returns {Number} - */ - var easingPattern = function ( type, time ) { - var pattern; - if ( type === 'easeInQuad' ) pattern = time * time; // accelerating from zero velocity - if ( type === 'easeOutQuad' ) pattern = time * (2 - time); // decelerating to zero velocity - if ( type === 'easeInOutQuad' ) pattern = time < 0.5 ? 2 * time * time : -1 + (4 - 2 * time) * time; // acceleration until halfway, then deceleration - if ( type === 'easeInCubic' ) pattern = time * time * time; // accelerating from zero velocity - if ( type === 'easeOutCubic' ) pattern = (--time) * time * time + 1; // decelerating to zero velocity - if ( type === 'easeInOutCubic' ) pattern = time < 0.5 ? 4 * time * time * time : (time - 1) * (2 * time - 2) * (2 * time - 2) + 1; // acceleration until halfway, then deceleration - if ( type === 'easeInQuart' ) pattern = time * time * time * time; // accelerating from zero velocity - if ( type === 'easeOutQuart' ) pattern = 1 - (--time) * time * time * time; // decelerating to zero velocity - if ( type === 'easeInOutQuart' ) pattern = time < 0.5 ? 8 * time * time * time * time : 1 - 8 * (--time) * time * time * time; // acceleration until halfway, then deceleration - if ( type === 'easeInQuint' ) pattern = time * time * time * time * time; // accelerating from zero velocity - if ( type === 'easeOutQuint' ) pattern = 1 + (--time) * time * time * time * time; // decelerating to zero velocity - if ( type === 'easeInOutQuint' ) pattern = time < 0.5 ? 16 * time * time * time * time * time : 1 + 16 * (--time) * time * time * time * time; // acceleration until halfway, then deceleration - return pattern || time; // no easing, no acceleration - }; - - /** - * Calculate how far to scroll - * @private - * @param {Element} anchor The anchor element to scroll to - * @param {Number} headerHeight Height of a fixed header, if any - * @param {Number} offset Number of pixels by which to offset scroll - * @returns {Number} - */ - var getEndLocation = function ( anchor, headerHeight, offset ) { - var location = 0; - if (anchor.offsetParent) { - do { - location += anchor.offsetTop; - anchor = anchor.offsetParent; - } while (anchor); - } - location = Math.max(location - headerHeight - offset, 0); - return Math.min(location, getDocumentHeight() - getViewportHeight()); - }; - - /** - * Determine the viewport's height - * @private - * @returns {Number} - */ - var getViewportHeight = function() { - return Math.max( document.documentElement.clientHeight, root.innerHeight || 0 ); - }; - - /** - * Determine the document's height - * @private - * @returns {Number} - */ - var getDocumentHeight = function () { - return Math.max( - document.body.scrollHeight, document.documentElement.scrollHeight, - document.body.offsetHeight, document.documentElement.offsetHeight, - document.body.clientHeight, document.documentElement.clientHeight - ); - }; - - /** - * Convert data-options attribute into an object of key/value pairs - * @private - * @param {String} options Link-specific options as a data attribute string - * @returns {Object} - */ - var getDataOptions = function ( options ) { - return !options || !(typeof JSON === 'object' && typeof JSON.parse === 'function') ? {} : JSON.parse( options ); - }; - - /** - * Get the height of the fixed header - * @private - * @param {Node} header The header - * @return {Number} The height of the header - */ - var getHeaderHeight = function ( header ) { - return !header ? 0 : ( getHeight( header ) + header.offsetTop ); - }; - - /** - * Bring the anchored element into focus - * @private - */ - var adjustFocus = function ( anchor, endLocation, isNum ) { - - // Don't run if scrolling to a number on the page - if ( isNum ) return; - - // Otherwise, bring anchor element into focus - anchor.focus(); - if ( document.activeElement.id !== anchor.id ) { - anchor.setAttribute( 'tabindex', '-1' ); - anchor.focus(); - anchor.style.outline = 'none'; - } - root.scrollTo( 0 , endLocation ); - - }; - - /** - * Start/stop the scrolling animation - * @public - * @param {Node|Number} anchor The element or position to scroll to - * @param {Element} toggle The element that toggled the scroll event - * @param {Object} options - */ - smoothScroll.animateScroll = function ( anchor, toggle, options ) { - - // Options and overrides - var overrides = getDataOptions( toggle ? toggle.getAttribute('data-options') : null ); - var animateSettings = extend( settings || defaults, options || {}, overrides ); // Merge user options with defaults - - // Selectors and variables - var isNum = Object.prototype.toString.call( anchor ) === '[object Number]' ? true : false; - var anchorElem = isNum || !anchor.tagName ? null : anchor; - if ( !isNum && !anchorElem ) return; - var startLocation = root.pageYOffset; // Current location on the page - if ( animateSettings.selectorHeader && !fixedHeader ) { - // Get the fixed header if not already set - fixedHeader = document.querySelector( animateSettings.selectorHeader ); - } - if ( !headerHeight ) { - // Get the height of a fixed header if one exists and not already set - headerHeight = getHeaderHeight( fixedHeader ); - } - var endLocation = isNum ? anchor : getEndLocation( anchorElem, headerHeight, parseInt(animateSettings.offset, 10) ); // Location to scroll to - var distance = endLocation - startLocation; // distance to travel - var documentHeight = getDocumentHeight(); - var timeLapsed = 0; - var percentage, position; - - /** - * Stop the scroll animation when it reaches its target (or the bottom/top of page) - * @private - * @param {Number} position Current position on the page - * @param {Number} endLocation Scroll to location - * @param {Number} animationInterval How much to scroll on this loop - */ - var stopAnimateScroll = function ( position, endLocation, animationInterval ) { - var currentLocation = root.pageYOffset; - if ( position == endLocation || currentLocation == endLocation || ( (root.innerHeight + currentLocation) >= documentHeight ) ) { - - // Clear the animation timer - clearInterval(animationInterval); - - // Bring the anchored element into focus - adjustFocus( anchor, endLocation, isNum ); - - // Run callback after animation complete - animateSettings.callback( anchor, toggle ); - - } - }; - - /** - * Loop scrolling animation - * @private - */ - var loopAnimateScroll = function () { - timeLapsed += 16; - percentage = ( timeLapsed / parseInt(animateSettings.speed, 10) ); - percentage = ( percentage > 1 ) ? 1 : percentage; - position = startLocation + ( distance * easingPattern(animateSettings.easing, percentage) ); - root.scrollTo( 0, Math.floor(position) ); - stopAnimateScroll(position, endLocation, animationInterval); - }; - - /** - * Set interval timer - * @private - */ - var startAnimateScroll = function () { - clearInterval(animationInterval); - animationInterval = setInterval(loopAnimateScroll, 16); - }; - - /** - * Reset position to fix weird iOS bug - * @link https://github.com/cferdinandi/smooth-scroll/issues/45 - */ - if ( root.pageYOffset === 0 ) { - root.scrollTo( 0, 0 ); - } - - // Start scrolling animation - startAnimateScroll(); - - }; - - /** - * Handle has change event - * @private - */ - var hashChangeHandler = function (event) { - - // Get hash from URL - // var hash = decodeURIComponent( escapeCharacters( root.location.hash ) ); - var hash; - try { - hash = escapeCharacters( decodeURIComponent( root.location.hash ) ); - } catch(e) { - hash = escapeCharacters( root.location.hash ); - } - - // Only run if there's an anchor element to scroll to - if ( !anchor ) return; - - // Reset the anchor element's ID - anchor.id = anchor.getAttribute( 'data-scroll-id' ); - - // Scroll to the anchored content - smoothScroll.animateScroll( anchor, toggle ); - - // Reset anchor and toggle - anchor = null; - toggle = null; - - }; - - /** - * If smooth scroll element clicked, animate scroll - * @private - */ - var clickHandler = function (event) { - - // Don't run if right-click or command/control + click - if ( event.button !== 0 || event.metaKey || event.ctrlKey ) return; - - // Check if a smooth scroll link was clicked - toggle = getClosest( event.target, settings.selector ); - if ( !toggle || toggle.tagName.toLowerCase() !== 'a' ) return; - - // Only run if link is an anchor and points to the current page - if ( toggle.hostname !== root.location.hostname || toggle.pathname !== root.location.pathname || !/#/.test(toggle.href) ) return; - - // Get the sanitized hash - // var hash = decodeURIComponent( escapeCharacters( toggle.hash ) ); - // console.log(hash); - var hash; - try { - hash = escapeCharacters( decodeURIComponent( toggle.hash ) ); - } catch(e) { - hash = escapeCharacters( toggle.hash ); - } - - // If the hash is empty, scroll to the top of the page - if ( hash === '#' ) { - - // Prevent default link behavior - event.preventDefault(); - - // Set the anchored element - anchor = document.body; - - // Save or create the ID as a data attribute and remove it (prevents scroll jump) - var id = anchor.id ? anchor.id : 'smooth-scroll-top'; - anchor.setAttribute( 'data-scroll-id', id ); - anchor.id = ''; - - // If no hash change event will happen, fire manually - // Otherwise, update the hash - if ( root.location.hash.substring(1) === id ) { - hashChangeHandler(); - } else { - root.location.hash = id; - } - - return; - - } - - // Get the anchored element - anchor = document.querySelector( hash ); - - // If anchored element exists, save the ID as a data attribute and remove it (prevents scroll jump) - if ( !anchor ) return; - anchor.setAttribute( 'data-scroll-id', anchor.id ); - anchor.id = ''; - - // If no hash change event will happen, fire manually - if ( toggle.hash === root.location.hash ) { - event.preventDefault(); - hashChangeHandler(); - } - - }; - - /** - * On window scroll and resize, only run events at a rate of 15fps for better performance - * @private - * @param {Function} eventTimeout Timeout function - * @param {Object} settings - */ - var resizeThrottler = function (event) { - if ( !eventTimeout ) { - eventTimeout = setTimeout((function() { - eventTimeout = null; // Reset timeout - headerHeight = getHeaderHeight( fixedHeader ); // Get the height of a fixed header if one exists - }), 66); - } - }; - - /** - * Destroy the current initialization. - * @public - */ - smoothScroll.destroy = function () { - - // If plugin isn't already initialized, stop - if ( !settings ) return; - - // Remove event listeners - document.removeEventListener( 'click', clickHandler, false ); - root.removeEventListener( 'resize', resizeThrottler, false ); - - // Reset varaibles - settings = null; - anchor = null; - toggle = null; - fixedHeader = null; - headerHeight = null; - eventTimeout = null; - animationInterval = null; - }; - - /** - * Initialize Smooth Scroll - * @public - * @param {Object} options User settings - */ - smoothScroll.init = function ( options ) { - - // feature test - if ( !supports ) return; - - // Destroy any existing initializations - smoothScroll.destroy(); - - // Selectors and variables - settings = extend( defaults, options || {} ); // Merge user options with defaults - fixedHeader = settings.selectorHeader ? document.querySelector( settings.selectorHeader ) : null; // Get the fixed header - headerHeight = getHeaderHeight( fixedHeader ); - - // When a toggle is clicked, run the click handler - document.addEventListener( 'click', clickHandler, false ); - - // Listen for hash changes - root.addEventListener('hashchange', hashChangeHandler, false); - - // If window is resized and there's a fixed header, recalculate its size - if ( fixedHeader ) { - root.addEventListener( 'resize', resizeThrottler, false ); - } - - }; - - - // - // Public APIs - // - - return smoothScroll; - -})); \ No newline at end of file diff --git a/dist/js/smooth-scroll.min.js b/dist/js/smooth-scroll.min.js deleted file mode 100755 index d952995..0000000 --- a/dist/js/smooth-scroll.min.js +++ /dev/null @@ -1,2 +0,0 @@ -/*! smooth-scroll v10.2.1 | (c) 2016 Chris Ferdinandi | MIT License | http://github.com/cferdinandi/smooth-scroll */ -!(function(e,t){"function"==typeof define&&define.amd?define([],t(e)):"object"==typeof exports?module.exports=t(e):e.smoothScroll=t(e)})("undefined"!=typeof global?global:this.window||this.global,(function(e){"use strict";var t,n,o,r,a,c,l,i={},u="querySelector"in document&&"addEventListener"in e,s={selector:"[data-scroll]",selectorHeader:null,speed:500,easing:"easeInOutCubic",offset:0,callback:function(){}},d=function(){var e={},t=!1,n=0,o=arguments.length;"[object Boolean]"===Object.prototype.toString.call(arguments[0])&&(t=arguments[0],n++);for(var r=function(n){for(var o in n)Object.prototype.hasOwnProperty.call(n,o)&&(t&&"[object Object]"===Object.prototype.toString.call(n[o])?e[o]=d(!0,e[o],n[o]):e[o]=n[o])};n=0&&t.item(n)!==this;);return n>-1});e&&e!==document;e=e.parentNode)if(e.matches(t))return e;return null},m=function(e){"#"===e.charAt(0)&&(e=e.substr(1));for(var t,n=String(e),o=n.length,r=-1,a="",c=n.charCodeAt(0);++r=1&&t<=31||127==t||0===r&&t>=48&&t<=57||1===r&&t>=48&&t<=57&&45===c?"\\"+t.toString(16)+" ":t>=128||45===t||95===t||t>=48&&t<=57||t>=65&&t<=90||t>=97&&t<=122?n.charAt(r):"\\"+n.charAt(r)}return"#"+a},p=function(e,t){var n;return"easeInQuad"===e&&(n=t*t),"easeOutQuad"===e&&(n=t*(2-t)),"easeInOutQuad"===e&&(n=t<.5?2*t*t:-1+(4-2*t)*t),"easeInCubic"===e&&(n=t*t*t),"easeOutCubic"===e&&(n=--t*t*t+1),"easeInOutCubic"===e&&(n=t<.5?4*t*t*t:(t-1)*(2*t-2)*(2*t-2)+1),"easeInQuart"===e&&(n=t*t*t*t),"easeOutQuart"===e&&(n=1- --t*t*t*t),"easeInOutQuart"===e&&(n=t<.5?8*t*t*t*t:1-8*--t*t*t*t),"easeInQuint"===e&&(n=t*t*t*t*t),"easeOutQuint"===e&&(n=1+--t*t*t*t*t),"easeInOutQuint"===e&&(n=t<.5?16*t*t*t*t*t:1+16*--t*t*t*t*t),n||t},g=function(e,t,n){var o=0;if(e.offsetParent)do o+=e.offsetTop,e=e.offsetParent;while(e);return o=Math.max(o-t-n,0),Math.min(o,v()-b())},b=function(){return Math.max(document.documentElement.clientHeight,e.innerHeight||0)},v=function(){return Math.max(document.body.scrollHeight,document.documentElement.scrollHeight,document.body.offsetHeight,document.documentElement.offsetHeight,document.body.clientHeight,document.documentElement.clientHeight)},y=function(e){return e&&"object"==typeof JSON&&"function"==typeof JSON.parse?JSON.parse(e):{}},O=function(e){return e?f(e)+e.offsetTop:0},S=function(t,n,o){o||(t.focus(),document.activeElement.id!==t.id&&(t.setAttribute("tabindex","-1"),t.focus(),t.style.outline="none"),e.scrollTo(0,n))};i.animateScroll=function(n,o,c){var i=y(o?o.getAttribute("data-options"):null),u=d(t||s,c||{},i),f="[object Number]"===Object.prototype.toString.call(n),h=f||!n.tagName?null:n;if(f||h){var m=e.pageYOffset;u.selectorHeader&&!r&&(r=document.querySelector(u.selectorHeader)),a||(a=O(r));var b,E,I=f?n:g(h,a,parseInt(u.offset,10)),H=I-m,A=v(),j=0,C=function(t,r,a){var c=e.pageYOffset;(t==r||c==r||e.innerHeight+c>=A)&&(clearInterval(a),S(n,r,f),u.callback(n,o))},M=function(){j+=16,b=j/parseInt(u.speed,10),b=b>1?1:b,E=m+H*p(u.easing,b),e.scrollTo(0,Math.floor(E)),C(E,I,l)},w=function(){clearInterval(l),l=setInterval(M,16)};0===e.pageYOffset&&e.scrollTo(0,0),w()}};var E=function(t){var r;try{r=m(decodeURIComponent(e.location.hash))}catch(t){r=m(e.location.hash)}n&&(n.id=n.getAttribute("data-scroll-id"),i.animateScroll(n,o),n=null,o=null)},I=function(r){if(0===r.button&&!r.metaKey&&!r.ctrlKey&&(o=h(r.target,t.selector),o&&"a"===o.tagName.toLowerCase()&&o.hostname===e.location.hostname&&o.pathname===e.location.pathname&&/#/.test(o.href))){var a;try{a=m(decodeURIComponent(o.hash))}catch(e){a=m(o.hash)}if("#"===a){r.preventDefault(),n=document.body;var c=n.id?n.id:"smooth-scroll-top";return n.setAttribute("data-scroll-id",c),n.id="",void(e.location.hash.substring(1)===c?E():e.location.hash=c)}n=document.querySelector(a),n&&(n.setAttribute("data-scroll-id",n.id),n.id="",o.hash===e.location.hash&&(r.preventDefault(),E()))}},H=function(e){c||(c=setTimeout((function(){c=null,a=O(r)}),66))};return i.destroy=function(){t&&(document.removeEventListener("click",I,!1),e.removeEventListener("resize",H,!1),t=null,n=null,o=null,r=null,a=null,c=null,l=null)},i.init=function(n){u&&(i.destroy(),t=d(s,n||{}),r=t.selectorHeader?document.querySelector(t.selectorHeader):null,a=O(r),document.addEventListener("click",I,!1),e.addEventListener("hashchange",E,!1),r&&e.addEventListener("resize",H,!1))},i})); \ No newline at end of file diff --git a/dist/smooth-scroll.js b/dist/smooth-scroll.js new file mode 100644 index 0000000..4984899 --- /dev/null +++ b/dist/smooth-scroll.js @@ -0,0 +1,629 @@ +/*! SmoothScroll v16.1.4 | (c) 2020 Chris Ferdinandi | MIT License | http://github.com/cferdinandi/smooth-scroll */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : + typeof define === 'function' && define.amd ? define(factory) : + (global = global || self, global.SmoothScroll = factory()); +}(this, (function () { 'use strict'; + + // + // Default settings + // + + var defaults = { + + // Selectors + ignore: '[data-scroll-ignore]', + header: null, + topOnEmptyHash: true, + + // Speed & Duration + speed: 500, + speedAsDuration: false, + durationMax: null, + durationMin: null, + clip: true, + offset: 0, + + // Easing + easing: 'easeInOutCubic', + customEasing: null, + + // History + updateURL: true, + popstate: true, + + // Custom Events + emitEvents: true + + }; + + + // + // Utility Methods + // + + /** + * Check if browser supports required methods + * @return {Boolean} Returns true if all required methods are supported + */ + var supports = function () { + return ( + 'querySelector' in document && + 'addEventListener' in window && + 'requestAnimationFrame' in window && + 'closest' in window.Element.prototype + ); + }; + + /** + * Merge two or more objects together. + * @param {Object} objects The objects to merge together + * @returns {Object} Merged values of defaults and options + */ + var extend = function () { + var merged = {}; + Array.prototype.forEach.call(arguments, function (obj) { + for (var key in obj) { + if (!obj.hasOwnProperty(key)) return; + merged[key] = obj[key]; + } + }); + return merged; + }; + + /** + * Check to see if user prefers reduced motion + * @param {Object} settings Script settings + */ + var reduceMotion = function () { + if ('matchMedia' in window && window.matchMedia('(prefers-reduced-motion)').matches) { + return true; + } + return false; + }; + + /** + * Get the height of an element. + * @param {Node} elem The element to get the height of + * @return {Number} The element's height in pixels + */ + var getHeight = function (elem) { + return parseInt(window.getComputedStyle(elem).height, 10); + }; + + /** + * Escape special characters for use with querySelector + * @author Mathias Bynens + * @link https://github.com/mathiasbynens/CSS.escape + * @param {String} id The anchor ID to escape + */ + var escapeCharacters = function (id) { + + // Remove leading hash + if (id.charAt(0) === '#') { + id = id.substr(1); + } + + var string = String(id); + var length = string.length; + var index = -1; + var codeUnit; + var result = ''; + var firstCodeUnit = string.charCodeAt(0); + while (++index < length) { + codeUnit = string.charCodeAt(index); + // Note: there’s no need to special-case astral symbols, surrogate + // pairs, or lone surrogates. + + // If the character is NULL (U+0000), then throw an + // `InvalidCharacterError` exception and terminate these steps. + if (codeUnit === 0x0000) { + throw new InvalidCharacterError( + 'Invalid character: the input contains U+0000.' + ); + } + + if ( + // If the character is in the range [\1-\1F] (U+0001 to U+001F) or is + // U+007F, […] + (codeUnit >= 0x0001 && codeUnit <= 0x001F) || codeUnit == 0x007F || + // If the character is the first character and is in the range [0-9] + // (U+0030 to U+0039), […] + (index === 0 && codeUnit >= 0x0030 && codeUnit <= 0x0039) || + // If the character is the second character and is in the range [0-9] + // (U+0030 to U+0039) and the first character is a `-` (U+002D), […] + ( + index === 1 && + codeUnit >= 0x0030 && codeUnit <= 0x0039 && + firstCodeUnit === 0x002D + ) + ) { + // http://dev.w3.org/csswg/cssom/#escape-a-character-as-code-point + result += '\\' + codeUnit.toString(16) + ' '; + continue; + } + + // If the character is not handled by one of the above rules and is + // greater than or equal to U+0080, is `-` (U+002D) or `_` (U+005F), or + // is in one of the ranges [0-9] (U+0030 to U+0039), [A-Z] (U+0041 to + // U+005A), or [a-z] (U+0061 to U+007A), […] + if ( + codeUnit >= 0x0080 || + codeUnit === 0x002D || + codeUnit === 0x005F || + codeUnit >= 0x0030 && codeUnit <= 0x0039 || + codeUnit >= 0x0041 && codeUnit <= 0x005A || + codeUnit >= 0x0061 && codeUnit <= 0x007A + ) { + // the character itself + result += string.charAt(index); + continue; + } + + // Otherwise, the escaped character. + // http://dev.w3.org/csswg/cssom/#escape-a-character + result += '\\' + string.charAt(index); + + } + + // Return sanitized hash + return '#' + result; + + }; + + /** + * Calculate the easing pattern + * @link https://gist.github.com/gre/1650294 + * @param {Object} settings Easing pattern + * @param {Number} time Time animation should take to complete + * @returns {Number} + */ + var easingPattern = function (settings, time) { + var pattern; + + // Default Easing Patterns + if (settings.easing === 'easeInQuad') pattern = time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutQuad') pattern = time * (2 - time); // decelerating to zero velocity + if (settings.easing === 'easeInOutQuad') pattern = time < 0.5 ? 2 * time * time : -1 + (4 - 2 * time) * time; // acceleration until halfway, then deceleration + if (settings.easing === 'easeInCubic') pattern = time * time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutCubic') pattern = (--time) * time * time + 1; // decelerating to zero velocity + if (settings.easing === 'easeInOutCubic') pattern = time < 0.5 ? 4 * time * time * time : (time - 1) * (2 * time - 2) * (2 * time - 2) + 1; // acceleration until halfway, then deceleration + if (settings.easing === 'easeInQuart') pattern = time * time * time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutQuart') pattern = 1 - (--time) * time * time * time; // decelerating to zero velocity + if (settings.easing === 'easeInOutQuart') pattern = time < 0.5 ? 8 * time * time * time * time : 1 - 8 * (--time) * time * time * time; // acceleration until halfway, then deceleration + if (settings.easing === 'easeInQuint') pattern = time * time * time * time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutQuint') pattern = 1 + (--time) * time * time * time * time; // decelerating to zero velocity + if (settings.easing === 'easeInOutQuint') pattern = time < 0.5 ? 16 * time * time * time * time * time : 1 + 16 * (--time) * time * time * time * time; // acceleration until halfway, then deceleration + + // Custom Easing Patterns + if (!!settings.customEasing) pattern = settings.customEasing(time); + + return pattern || time; // no easing, no acceleration + }; + + /** + * Determine the document's height + * @returns {Number} + */ + var getDocumentHeight = function () { + return Math.max( + document.body.scrollHeight, document.documentElement.scrollHeight, + document.body.offsetHeight, document.documentElement.offsetHeight, + document.body.clientHeight, document.documentElement.clientHeight + ); + }; + + /** + * Calculate how far to scroll + * Clip support added by robjtede - https://github.com/cferdinandi/smooth-scroll/issues/405 + * @param {Element} anchor The anchor element to scroll to + * @param {Number} headerHeight Height of a fixed header, if any + * @param {Number} offset Number of pixels by which to offset scroll + * @param {Boolean} clip If true, adjust scroll distance to prevent abrupt stops near the bottom of the page + * @returns {Number} + */ + var getEndLocation = function (anchor, headerHeight, offset, clip) { + var location = 0; + if (anchor.offsetParent) { + do { + location += anchor.offsetTop; + anchor = anchor.offsetParent; + } while (anchor); + } + location = Math.max(location - headerHeight - offset, 0); + if (clip) { + location = Math.min(location, getDocumentHeight() - window.innerHeight); + } + return location; + }; + + /** + * Get the height of the fixed header + * @param {Node} header The header + * @return {Number} The height of the header + */ + var getHeaderHeight = function (header) { + return !header ? 0 : (getHeight(header) + header.offsetTop); + }; + + /** + * Calculate the speed to use for the animation + * @param {Number} distance The distance to travel + * @param {Object} settings The plugin settings + * @return {Number} How fast to animate + */ + var getSpeed = function (distance, settings) { + var speed = settings.speedAsDuration ? settings.speed : Math.abs(distance / 1000 * settings.speed); + if (settings.durationMax && speed > settings.durationMax) return settings.durationMax; + if (settings.durationMin && speed < settings.durationMin) return settings.durationMin; + return parseInt(speed, 10); + }; + + var setHistory = function (options) { + + // Make sure this should run + if (!history.replaceState || !options.updateURL || history.state) return; + + // Get the hash to use + var hash = window.location.hash; + hash = hash ? hash : ''; + + // Set a default history + history.replaceState( + { + smoothScroll: JSON.stringify(options), + anchor: hash ? hash : window.pageYOffset + }, + document.title, + hash ? hash : window.location.href + ); + + }; + + /** + * Update the URL + * @param {Node} anchor The anchor that was scrolled to + * @param {Boolean} isNum If true, anchor is a number + * @param {Object} options Settings for Smooth Scroll + */ + var updateURL = function (anchor, isNum, options) { + + // Bail if the anchor is a number + if (isNum) return; + + // Verify that pushState is supported and the updateURL option is enabled + if (!history.pushState || !options.updateURL) return; + + // Update URL + history.pushState( + { + smoothScroll: JSON.stringify(options), + anchor: anchor.id + }, + document.title, + anchor === document.documentElement ? '#top' : '#' + anchor.id + ); + + }; + + /** + * Bring the anchored element into focus + * @param {Node} anchor The anchor element + * @param {Number} endLocation The end location to scroll to + * @param {Boolean} isNum If true, scroll is to a position rather than an element + */ + var adjustFocus = function (anchor, endLocation, isNum) { + + // Is scrolling to top of page, blur + if (anchor === 0) { + document.body.focus(); + } + + // Don't run if scrolling to a number on the page + if (isNum) return; + + // Otherwise, bring anchor element into focus + anchor.focus(); + if (document.activeElement !== anchor) { + anchor.setAttribute('tabindex', '-1'); + anchor.focus(); + anchor.style.outline = 'none'; + } + window.scrollTo(0 , endLocation); + + }; + + /** + * Emit a custom event + * @param {String} type The event type + * @param {Object} options The settings object + * @param {Node} anchor The anchor element + * @param {Node} toggle The toggle element + */ + var emitEvent = function (type, options, anchor, toggle) { + if (!options.emitEvents || typeof window.CustomEvent !== 'function') return; + var event = new CustomEvent(type, { + bubbles: true, + detail: { + anchor: anchor, + toggle: toggle + } + }); + document.dispatchEvent(event); + }; + + + // + // SmoothScroll Constructor + // + + var SmoothScroll = function (selector, options) { + + // + // Variables + // + + var smoothScroll = {}; // Object for public APIs + var settings, toggle, fixedHeader, animationInterval; + + + // + // Methods + // + + /** + * Cancel a scroll-in-progress + */ + smoothScroll.cancelScroll = function (noEvent) { + cancelAnimationFrame(animationInterval); + animationInterval = null; + if (noEvent) return; + emitEvent('scrollCancel', settings); + }; + + /** + * Start/stop the scrolling animation + * @param {Node|Number} anchor The element or position to scroll to + * @param {Element} toggle The element that toggled the scroll event + * @param {Object} options + */ + smoothScroll.animateScroll = function (anchor, toggle, options) { + + // Cancel any in progress scrolls + smoothScroll.cancelScroll(); + + // Local settings + var _settings = extend(settings || defaults, options || {}); // Merge user options with defaults + + // Selectors and variables + var isNum = Object.prototype.toString.call(anchor) === '[object Number]' ? true : false; + var anchorElem = isNum || !anchor.tagName ? null : anchor; + if (!isNum && !anchorElem) return; + var startLocation = window.pageYOffset; // Current location on the page + if (_settings.header && !fixedHeader) { + // Get the fixed header if not already set + fixedHeader = document.querySelector(_settings.header); + } + var headerHeight = getHeaderHeight(fixedHeader); + var endLocation = isNum ? anchor : getEndLocation(anchorElem, headerHeight, parseInt((typeof _settings.offset === 'function' ? _settings.offset(anchor, toggle) : _settings.offset), 10), _settings.clip); // Location to scroll to + var distance = endLocation - startLocation; // distance to travel + var documentHeight = getDocumentHeight(); + var timeLapsed = 0; + var speed = getSpeed(distance, _settings); + var start, percentage, position; + + /** + * Stop the scroll animation when it reaches its target (or the bottom/top of page) + * @param {Number} position Current position on the page + * @param {Number} endLocation Scroll to location + * @param {Number} animationInterval How much to scroll on this loop + */ + var stopAnimateScroll = function (position, endLocation) { + + // Get the current location + var currentLocation = window.pageYOffset; + + // Check if the end location has been reached yet (or we've hit the end of the document) + if (position == endLocation || currentLocation == endLocation || ((startLocation < endLocation && window.innerHeight + currentLocation) >= documentHeight)) { + + // Clear the animation timer + smoothScroll.cancelScroll(true); + + // Bring the anchored element into focus + adjustFocus(anchor, endLocation, isNum); + + // Emit a custom event + emitEvent('scrollStop', _settings, anchor, toggle); + + // Reset start + start = null; + animationInterval = null; + + return true; + + } + }; + + /** + * Loop scrolling animation + */ + var loopAnimateScroll = function (timestamp) { + if (!start) { start = timestamp; } + timeLapsed += timestamp - start; + percentage = speed === 0 ? 0 : (timeLapsed / speed); + percentage = (percentage > 1) ? 1 : percentage; + position = startLocation + (distance * easingPattern(_settings, percentage)); + window.scrollTo(0, Math.floor(position)); + if (!stopAnimateScroll(position, endLocation)) { + animationInterval = window.requestAnimationFrame(loopAnimateScroll); + start = timestamp; + } + }; + + /** + * Reset position to fix weird iOS bug + * @link https://github.com/cferdinandi/smooth-scroll/issues/45 + */ + if (window.pageYOffset === 0) { + window.scrollTo(0, 0); + } + + // Update the URL + updateURL(anchor, isNum, _settings); + + // If the user prefers reduced motion, jump to location + if (reduceMotion()) { + adjustFocus(anchor, Math.floor(endLocation), false); + return; + } + + // Emit a custom event + emitEvent('scrollStart', _settings, anchor, toggle); + + // Start scrolling animation + smoothScroll.cancelScroll(true); + window.requestAnimationFrame(loopAnimateScroll); + + }; + + /** + * If smooth scroll element clicked, animate scroll + */ + var clickHandler = function (event) { + + // Don't run if event was canceled but still bubbled up + // By @mgreter - https://github.com/cferdinandi/smooth-scroll/pull/462/ + if (event.defaultPrevented) return; + + // Don't run if right-click or command/control + click or shift + click + if (event.button !== 0 || event.metaKey || event.ctrlKey || event.shiftKey) return; + + // Check if event.target has closest() method + // By @totegi - https://github.com/cferdinandi/smooth-scroll/pull/401/ + if (!('closest' in event.target)) return; + + // Check if a smooth scroll link was clicked + toggle = event.target.closest(selector); + if (!toggle || toggle.tagName.toLowerCase() !== 'a' || event.target.closest(settings.ignore)) return; + + // Only run if link is an anchor and points to the current page + if (toggle.hostname !== window.location.hostname || toggle.pathname !== window.location.pathname || !/#/.test(toggle.href)) return; + + // Get an escaped version of the hash + var hash; + try { + hash = escapeCharacters(decodeURIComponent(toggle.hash)); + } catch(e) { + hash = escapeCharacters(toggle.hash); + } + + // Get the anchored element + var anchor; + if (hash === '#') { + if (!settings.topOnEmptyHash) return; + anchor = document.documentElement; + } else { + anchor = document.querySelector(hash); + } + anchor = !anchor && hash === '#top' ? document.documentElement : anchor; + + // If anchored element exists, scroll to it + if (!anchor) return; + event.preventDefault(); + setHistory(settings); + smoothScroll.animateScroll(anchor, toggle); + + }; + + /** + * Animate scroll on popstate events + */ + var popstateHandler = function () { + + // Stop if history.state doesn't exist (ex. if clicking on a broken anchor link). + // fixes `Cannot read property 'smoothScroll' of null` error getting thrown. + if (history.state === null) return; + + // Only run if state is a popstate record for this instantiation + if (!history.state.smoothScroll || history.state.smoothScroll !== JSON.stringify(settings)) return; + + // Get the anchor + var anchor = history.state.anchor; + if (typeof anchor === 'string' && anchor) { + anchor = document.querySelector(escapeCharacters(history.state.anchor)); + if (!anchor) return; + } + + // Animate scroll to anchor link + smoothScroll.animateScroll(anchor, null, {updateURL: false}); + + }; + + /** + * Destroy the current initialization. + */ + smoothScroll.destroy = function () { + + // If plugin isn't already initialized, stop + if (!settings) return; + + // Remove event listeners + document.removeEventListener('click', clickHandler, false); + window.removeEventListener('popstate', popstateHandler, false); + + // Cancel any scrolls-in-progress + smoothScroll.cancelScroll(); + + // Reset variables + settings = null; + toggle = null; + fixedHeader = null; + animationInterval = null; + + }; + + /** + * Initialize Smooth Scroll + * @param {Object} options User settings + */ + var init = function () { + + // feature test + if (!supports()) throw 'Smooth Scroll: This browser does not support the required JavaScript methods and browser APIs.'; + + // Destroy any existing initializations + smoothScroll.destroy(); + + // Selectors and variables + settings = extend(defaults, options || {}); // Merge user options with defaults + fixedHeader = settings.header ? document.querySelector(settings.header) : null; // Get the fixed header + + // When a toggle is clicked, run the click handler + document.addEventListener('click', clickHandler, false); + + // If updateURL and popState are enabled, listen for pop events + if (settings.updateURL && settings.popstate) { + window.addEventListener('popstate', popstateHandler, false); + } + + }; + + + // + // Initialize plugin + // + + init(); + + + // + // Public APIs + // + + return smoothScroll; + + }; + + return SmoothScroll; + +}))); diff --git a/dist/smooth-scroll.min.js b/dist/smooth-scroll.min.js new file mode 100644 index 0000000..b3d1fe0 --- /dev/null +++ b/dist/smooth-scroll.min.js @@ -0,0 +1,2 @@ +/*! SmoothScroll v16.1.4 | (c) 2020 Chris Ferdinandi | MIT License | http://github.com/cferdinandi/smooth-scroll */ +!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e=e||self).SmoothScroll=t()}(this,(function(){"use strict";var e={ignore:"[data-scroll-ignore]",header:null,topOnEmptyHash:!0,speed:500,speedAsDuration:!1,durationMax:null,durationMin:null,clip:!0,offset:0,easing:"easeInOutCubic",customEasing:null,updateURL:!0,popstate:!0,emitEvents:!0},t=function(){var e={};return Array.prototype.forEach.call(arguments,(function(t){for(var n in t){if(!t.hasOwnProperty(n))return;e[n]=t[n]}})),e},n=function(e){"#"===e.charAt(0)&&(e=e.substr(1));for(var t,n=String(e),o=n.length,a=-1,i="",r=n.charCodeAt(0);++a=1&&t<=31||127==t||0===a&&t>=48&&t<=57||1===a&&t>=48&&t<=57&&45===r?i+="\\"+t.toString(16)+" ":i+=t>=128||45===t||95===t||t>=48&&t<=57||t>=65&&t<=90||t>=97&&t<=122?n.charAt(a):"\\"+n.charAt(a)}return"#"+i},o=function(){return Math.max(document.body.scrollHeight,document.documentElement.scrollHeight,document.body.offsetHeight,document.documentElement.offsetHeight,document.body.clientHeight,document.documentElement.clientHeight)},a=function(e){return e?(t=e,parseInt(window.getComputedStyle(t).height,10)+e.offsetTop):0;var t},i=function(e,t,n){0===e&&document.body.focus(),n||(e.focus(),document.activeElement!==e&&(e.setAttribute("tabindex","-1"),e.focus(),e.style.outline="none"),window.scrollTo(0,t))},r=function(e,t,n,o){if(t.emitEvents&&"function"==typeof window.CustomEvent){var a=new CustomEvent(e,{bubbles:!0,detail:{anchor:n,toggle:o}});document.dispatchEvent(a)}};return function(s,c){var u,l,d,f,m={};m.cancelScroll=function(e){cancelAnimationFrame(f),f=null,e||r("scrollCancel",u)},m.animateScroll=function(n,s,c){m.cancelScroll();var l=t(u||e,c||{}),h="[object Number]"===Object.prototype.toString.call(n),p=h||!n.tagName?null:n;if(h||p){var w=window.pageYOffset;l.header&&!d&&(d=document.querySelector(l.header));var g,y,v,S=a(d),E=h?n:function(e,t,n,a){var i=0;if(e.offsetParent)do{i+=e.offsetTop,e=e.offsetParent}while(e);return i=Math.max(i-t-n,0),a&&(i=Math.min(i,o()-window.innerHeight)),i}(p,S,parseInt("function"==typeof l.offset?l.offset(n,s):l.offset,10),l.clip),b=E-w,O=o(),I=0,M=function(e,t){var n=t.speedAsDuration?t.speed:Math.abs(e/1e3*t.speed);return t.durationMax&&n>t.durationMax?t.durationMax:t.durationMin&&n1?1:y),window.scrollTo(0,Math.floor(v)),function(e,t){var o=window.pageYOffset;if(e==t||o==t||(w=O)return m.cancelScroll(!0),i(n,t,h),r("scrollStop",l,n,s),g=null,f=null,!0}(v,E)||(f=window.requestAnimationFrame(A),g=e)};0===window.pageYOffset&&window.scrollTo(0,0),function(e,t,n){t||history.pushState&&n.updateURL&&history.pushState({smoothScroll:JSON.stringify(n),anchor:e.id},document.title,e===document.documentElement?"#top":"#"+e.id)}(n,h,l),"matchMedia"in window&&window.matchMedia("(prefers-reduced-motion)").matches?i(n,Math.floor(E),!1):(r("scrollStart",l,n,s),m.cancelScroll(!0),window.requestAnimationFrame(A))}};var h=function(e){if(!e.defaultPrevented&&!(0!==e.button||e.metaKey||e.ctrlKey||e.shiftKey)&&"closest"in e.target&&(l=e.target.closest(s))&&"a"===l.tagName.toLowerCase()&&!e.target.closest(u.ignore)&&l.hostname===window.location.hostname&&l.pathname===window.location.pathname&&/#/.test(l.href)){var t,o;try{t=n(decodeURIComponent(l.hash))}catch(e){t=n(l.hash)}if("#"===t){if(!u.topOnEmptyHash)return;o=document.documentElement}else o=document.querySelector(t);(o=o||"#top"!==t?o:document.documentElement)&&(e.preventDefault(),function(e){if(history.replaceState&&e.updateURL&&!history.state){var t=window.location.hash;t=t||"",history.replaceState({smoothScroll:JSON.stringify(e),anchor:t||window.pageYOffset},document.title,t||window.location.href)}}(u),m.animateScroll(o,l))}},p=function(){if(null!==history.state&&history.state.smoothScroll&&history.state.smoothScroll===JSON.stringify(u)){var e=history.state.anchor;"string"==typeof e&&e&&!(e=document.querySelector(n(history.state.anchor)))||m.animateScroll(e,null,{updateURL:!1})}};m.destroy=function(){u&&(document.removeEventListener("click",h,!1),window.removeEventListener("popstate",p,!1),m.cancelScroll(),u=null,l=null,d=null,f=null)};return function(){if(!("querySelector"in document&&"addEventListener"in window&&"requestAnimationFrame"in window&&"closest"in window.Element.prototype))throw"Smooth Scroll: This browser does not support the required JavaScript methods and browser APIs.";m.destroy(),u=t(e,c||{}),d=u.header?document.querySelector(u.header):null,document.addEventListener("click",h,!1),u.updateURL&&u.popstate&&window.addEventListener("popstate",p,!1)}(),m}})); diff --git a/dist/smooth-scroll.polyfills.js b/dist/smooth-scroll.polyfills.js new file mode 100644 index 0000000..3c98174 --- /dev/null +++ b/dist/smooth-scroll.polyfills.js @@ -0,0 +1,700 @@ +/*! SmoothScroll v16.1.4 | (c) 2020 Chris Ferdinandi | MIT License | http://github.com/cferdinandi/smooth-scroll */ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : + typeof define === 'function' && define.amd ? define(factory) : + (global = global || self, global.SmoothScroll = factory()); +}(this, (function () { 'use strict'; + + /** + * closest() polyfill + * @link https://developer.mozilla.org/en-US/docs/Web/API/Element/closest#Polyfill + */ + if (window.Element && !Element.prototype.closest) { + Element.prototype.closest = function(s) { + var matches = (this.document || this.ownerDocument).querySelectorAll(s), + i, + el = this; + do { + i = matches.length; + while (--i >= 0 && matches.item(i) !== el) {} + } while ((i < 0) && (el = el.parentElement)); + return el; + }; + } + + /** + * CustomEvent() polyfill + * https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/CustomEvent#Polyfill + */ + (function () { + + if (typeof window.CustomEvent === "function") return false; + + function CustomEvent(event, params) { + params = params || { bubbles: false, cancelable: false, detail: undefined }; + var evt = document.createEvent('CustomEvent'); + evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail); + return evt; + } + + CustomEvent.prototype = window.Event.prototype; + + window.CustomEvent = CustomEvent; + })(); + + /** + * requestAnimationFrame() polyfill + * By Erik Möller. Fixes from Paul Irish and Tino Zijdel. + * @link http://paulirish.com/2011/requestanimationframe-for-smart-animating/ + * @link http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating + * @license MIT + */ + (function() { + var lastTime = 0; + var vendors = ['ms', 'moz', 'webkit', 'o']; + for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) { + window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame']; + window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] || + window[vendors[x]+'CancelRequestAnimationFrame']; + } + + if (!window.requestAnimationFrame) { + window.requestAnimationFrame = function(callback, element) { + var currTime = new Date().getTime(); + var timeToCall = Math.max(0, 16 - (currTime - lastTime)); + var id = window.setTimeout(function() { callback(currTime + timeToCall); }, + timeToCall); + lastTime = currTime + timeToCall; + return id; + }; + } + + if (!window.cancelAnimationFrame) { + window.cancelAnimationFrame = function(id) { + clearTimeout(id); + }; + } + }()); + + // + // Default settings + // + + var defaults = { + + // Selectors + ignore: '[data-scroll-ignore]', + header: null, + topOnEmptyHash: true, + + // Speed & Duration + speed: 500, + speedAsDuration: false, + durationMax: null, + durationMin: null, + clip: true, + offset: 0, + + // Easing + easing: 'easeInOutCubic', + customEasing: null, + + // History + updateURL: true, + popstate: true, + + // Custom Events + emitEvents: true + + }; + + + // + // Utility Methods + // + + /** + * Check if browser supports required methods + * @return {Boolean} Returns true if all required methods are supported + */ + var supports = function () { + return ( + 'querySelector' in document && + 'addEventListener' in window && + 'requestAnimationFrame' in window && + 'closest' in window.Element.prototype + ); + }; + + /** + * Merge two or more objects together. + * @param {Object} objects The objects to merge together + * @returns {Object} Merged values of defaults and options + */ + var extend = function () { + var merged = {}; + Array.prototype.forEach.call(arguments, function (obj) { + for (var key in obj) { + if (!obj.hasOwnProperty(key)) return; + merged[key] = obj[key]; + } + }); + return merged; + }; + + /** + * Check to see if user prefers reduced motion + * @param {Object} settings Script settings + */ + var reduceMotion = function () { + if ('matchMedia' in window && window.matchMedia('(prefers-reduced-motion)').matches) { + return true; + } + return false; + }; + + /** + * Get the height of an element. + * @param {Node} elem The element to get the height of + * @return {Number} The element's height in pixels + */ + var getHeight = function (elem) { + return parseInt(window.getComputedStyle(elem).height, 10); + }; + + /** + * Escape special characters for use with querySelector + * @author Mathias Bynens + * @link https://github.com/mathiasbynens/CSS.escape + * @param {String} id The anchor ID to escape + */ + var escapeCharacters = function (id) { + + // Remove leading hash + if (id.charAt(0) === '#') { + id = id.substr(1); + } + + var string = String(id); + var length = string.length; + var index = -1; + var codeUnit; + var result = ''; + var firstCodeUnit = string.charCodeAt(0); + while (++index < length) { + codeUnit = string.charCodeAt(index); + // Note: there’s no need to special-case astral symbols, surrogate + // pairs, or lone surrogates. + + // If the character is NULL (U+0000), then throw an + // `InvalidCharacterError` exception and terminate these steps. + if (codeUnit === 0x0000) { + throw new InvalidCharacterError( + 'Invalid character: the input contains U+0000.' + ); + } + + if ( + // If the character is in the range [\1-\1F] (U+0001 to U+001F) or is + // U+007F, […] + (codeUnit >= 0x0001 && codeUnit <= 0x001F) || codeUnit == 0x007F || + // If the character is the first character and is in the range [0-9] + // (U+0030 to U+0039), […] + (index === 0 && codeUnit >= 0x0030 && codeUnit <= 0x0039) || + // If the character is the second character and is in the range [0-9] + // (U+0030 to U+0039) and the first character is a `-` (U+002D), […] + ( + index === 1 && + codeUnit >= 0x0030 && codeUnit <= 0x0039 && + firstCodeUnit === 0x002D + ) + ) { + // http://dev.w3.org/csswg/cssom/#escape-a-character-as-code-point + result += '\\' + codeUnit.toString(16) + ' '; + continue; + } + + // If the character is not handled by one of the above rules and is + // greater than or equal to U+0080, is `-` (U+002D) or `_` (U+005F), or + // is in one of the ranges [0-9] (U+0030 to U+0039), [A-Z] (U+0041 to + // U+005A), or [a-z] (U+0061 to U+007A), […] + if ( + codeUnit >= 0x0080 || + codeUnit === 0x002D || + codeUnit === 0x005F || + codeUnit >= 0x0030 && codeUnit <= 0x0039 || + codeUnit >= 0x0041 && codeUnit <= 0x005A || + codeUnit >= 0x0061 && codeUnit <= 0x007A + ) { + // the character itself + result += string.charAt(index); + continue; + } + + // Otherwise, the escaped character. + // http://dev.w3.org/csswg/cssom/#escape-a-character + result += '\\' + string.charAt(index); + + } + + // Return sanitized hash + return '#' + result; + + }; + + /** + * Calculate the easing pattern + * @link https://gist.github.com/gre/1650294 + * @param {Object} settings Easing pattern + * @param {Number} time Time animation should take to complete + * @returns {Number} + */ + var easingPattern = function (settings, time) { + var pattern; + + // Default Easing Patterns + if (settings.easing === 'easeInQuad') pattern = time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutQuad') pattern = time * (2 - time); // decelerating to zero velocity + if (settings.easing === 'easeInOutQuad') pattern = time < 0.5 ? 2 * time * time : -1 + (4 - 2 * time) * time; // acceleration until halfway, then deceleration + if (settings.easing === 'easeInCubic') pattern = time * time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutCubic') pattern = (--time) * time * time + 1; // decelerating to zero velocity + if (settings.easing === 'easeInOutCubic') pattern = time < 0.5 ? 4 * time * time * time : (time - 1) * (2 * time - 2) * (2 * time - 2) + 1; // acceleration until halfway, then deceleration + if (settings.easing === 'easeInQuart') pattern = time * time * time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutQuart') pattern = 1 - (--time) * time * time * time; // decelerating to zero velocity + if (settings.easing === 'easeInOutQuart') pattern = time < 0.5 ? 8 * time * time * time * time : 1 - 8 * (--time) * time * time * time; // acceleration until halfway, then deceleration + if (settings.easing === 'easeInQuint') pattern = time * time * time * time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutQuint') pattern = 1 + (--time) * time * time * time * time; // decelerating to zero velocity + if (settings.easing === 'easeInOutQuint') pattern = time < 0.5 ? 16 * time * time * time * time * time : 1 + 16 * (--time) * time * time * time * time; // acceleration until halfway, then deceleration + + // Custom Easing Patterns + if (!!settings.customEasing) pattern = settings.customEasing(time); + + return pattern || time; // no easing, no acceleration + }; + + /** + * Determine the document's height + * @returns {Number} + */ + var getDocumentHeight = function () { + return Math.max( + document.body.scrollHeight, document.documentElement.scrollHeight, + document.body.offsetHeight, document.documentElement.offsetHeight, + document.body.clientHeight, document.documentElement.clientHeight + ); + }; + + /** + * Calculate how far to scroll + * Clip support added by robjtede - https://github.com/cferdinandi/smooth-scroll/issues/405 + * @param {Element} anchor The anchor element to scroll to + * @param {Number} headerHeight Height of a fixed header, if any + * @param {Number} offset Number of pixels by which to offset scroll + * @param {Boolean} clip If true, adjust scroll distance to prevent abrupt stops near the bottom of the page + * @returns {Number} + */ + var getEndLocation = function (anchor, headerHeight, offset, clip) { + var location = 0; + if (anchor.offsetParent) { + do { + location += anchor.offsetTop; + anchor = anchor.offsetParent; + } while (anchor); + } + location = Math.max(location - headerHeight - offset, 0); + if (clip) { + location = Math.min(location, getDocumentHeight() - window.innerHeight); + } + return location; + }; + + /** + * Get the height of the fixed header + * @param {Node} header The header + * @return {Number} The height of the header + */ + var getHeaderHeight = function (header) { + return !header ? 0 : (getHeight(header) + header.offsetTop); + }; + + /** + * Calculate the speed to use for the animation + * @param {Number} distance The distance to travel + * @param {Object} settings The plugin settings + * @return {Number} How fast to animate + */ + var getSpeed = function (distance, settings) { + var speed = settings.speedAsDuration ? settings.speed : Math.abs(distance / 1000 * settings.speed); + if (settings.durationMax && speed > settings.durationMax) return settings.durationMax; + if (settings.durationMin && speed < settings.durationMin) return settings.durationMin; + return parseInt(speed, 10); + }; + + var setHistory = function (options) { + + // Make sure this should run + if (!history.replaceState || !options.updateURL || history.state) return; + + // Get the hash to use + var hash = window.location.hash; + hash = hash ? hash : ''; + + // Set a default history + history.replaceState( + { + smoothScroll: JSON.stringify(options), + anchor: hash ? hash : window.pageYOffset + }, + document.title, + hash ? hash : window.location.href + ); + + }; + + /** + * Update the URL + * @param {Node} anchor The anchor that was scrolled to + * @param {Boolean} isNum If true, anchor is a number + * @param {Object} options Settings for Smooth Scroll + */ + var updateURL = function (anchor, isNum, options) { + + // Bail if the anchor is a number + if (isNum) return; + + // Verify that pushState is supported and the updateURL option is enabled + if (!history.pushState || !options.updateURL) return; + + // Update URL + history.pushState( + { + smoothScroll: JSON.stringify(options), + anchor: anchor.id + }, + document.title, + anchor === document.documentElement ? '#top' : '#' + anchor.id + ); + + }; + + /** + * Bring the anchored element into focus + * @param {Node} anchor The anchor element + * @param {Number} endLocation The end location to scroll to + * @param {Boolean} isNum If true, scroll is to a position rather than an element + */ + var adjustFocus = function (anchor, endLocation, isNum) { + + // Is scrolling to top of page, blur + if (anchor === 0) { + document.body.focus(); + } + + // Don't run if scrolling to a number on the page + if (isNum) return; + + // Otherwise, bring anchor element into focus + anchor.focus(); + if (document.activeElement !== anchor) { + anchor.setAttribute('tabindex', '-1'); + anchor.focus(); + anchor.style.outline = 'none'; + } + window.scrollTo(0 , endLocation); + + }; + + /** + * Emit a custom event + * @param {String} type The event type + * @param {Object} options The settings object + * @param {Node} anchor The anchor element + * @param {Node} toggle The toggle element + */ + var emitEvent = function (type, options, anchor, toggle) { + if (!options.emitEvents || typeof window.CustomEvent !== 'function') return; + var event = new CustomEvent(type, { + bubbles: true, + detail: { + anchor: anchor, + toggle: toggle + } + }); + document.dispatchEvent(event); + }; + + + // + // SmoothScroll Constructor + // + + var SmoothScroll = function (selector, options) { + + // + // Variables + // + + var smoothScroll = {}; // Object for public APIs + var settings, toggle, fixedHeader, animationInterval; + + + // + // Methods + // + + /** + * Cancel a scroll-in-progress + */ + smoothScroll.cancelScroll = function (noEvent) { + cancelAnimationFrame(animationInterval); + animationInterval = null; + if (noEvent) return; + emitEvent('scrollCancel', settings); + }; + + /** + * Start/stop the scrolling animation + * @param {Node|Number} anchor The element or position to scroll to + * @param {Element} toggle The element that toggled the scroll event + * @param {Object} options + */ + smoothScroll.animateScroll = function (anchor, toggle, options) { + + // Cancel any in progress scrolls + smoothScroll.cancelScroll(); + + // Local settings + var _settings = extend(settings || defaults, options || {}); // Merge user options with defaults + + // Selectors and variables + var isNum = Object.prototype.toString.call(anchor) === '[object Number]' ? true : false; + var anchorElem = isNum || !anchor.tagName ? null : anchor; + if (!isNum && !anchorElem) return; + var startLocation = window.pageYOffset; // Current location on the page + if (_settings.header && !fixedHeader) { + // Get the fixed header if not already set + fixedHeader = document.querySelector(_settings.header); + } + var headerHeight = getHeaderHeight(fixedHeader); + var endLocation = isNum ? anchor : getEndLocation(anchorElem, headerHeight, parseInt((typeof _settings.offset === 'function' ? _settings.offset(anchor, toggle) : _settings.offset), 10), _settings.clip); // Location to scroll to + var distance = endLocation - startLocation; // distance to travel + var documentHeight = getDocumentHeight(); + var timeLapsed = 0; + var speed = getSpeed(distance, _settings); + var start, percentage, position; + + /** + * Stop the scroll animation when it reaches its target (or the bottom/top of page) + * @param {Number} position Current position on the page + * @param {Number} endLocation Scroll to location + * @param {Number} animationInterval How much to scroll on this loop + */ + var stopAnimateScroll = function (position, endLocation) { + + // Get the current location + var currentLocation = window.pageYOffset; + + // Check if the end location has been reached yet (or we've hit the end of the document) + if (position == endLocation || currentLocation == endLocation || ((startLocation < endLocation && window.innerHeight + currentLocation) >= documentHeight)) { + + // Clear the animation timer + smoothScroll.cancelScroll(true); + + // Bring the anchored element into focus + adjustFocus(anchor, endLocation, isNum); + + // Emit a custom event + emitEvent('scrollStop', _settings, anchor, toggle); + + // Reset start + start = null; + animationInterval = null; + + return true; + + } + }; + + /** + * Loop scrolling animation + */ + var loopAnimateScroll = function (timestamp) { + if (!start) { start = timestamp; } + timeLapsed += timestamp - start; + percentage = speed === 0 ? 0 : (timeLapsed / speed); + percentage = (percentage > 1) ? 1 : percentage; + position = startLocation + (distance * easingPattern(_settings, percentage)); + window.scrollTo(0, Math.floor(position)); + if (!stopAnimateScroll(position, endLocation)) { + animationInterval = window.requestAnimationFrame(loopAnimateScroll); + start = timestamp; + } + }; + + /** + * Reset position to fix weird iOS bug + * @link https://github.com/cferdinandi/smooth-scroll/issues/45 + */ + if (window.pageYOffset === 0) { + window.scrollTo(0, 0); + } + + // Update the URL + updateURL(anchor, isNum, _settings); + + // If the user prefers reduced motion, jump to location + if (reduceMotion()) { + adjustFocus(anchor, Math.floor(endLocation), false); + return; + } + + // Emit a custom event + emitEvent('scrollStart', _settings, anchor, toggle); + + // Start scrolling animation + smoothScroll.cancelScroll(true); + window.requestAnimationFrame(loopAnimateScroll); + + }; + + /** + * If smooth scroll element clicked, animate scroll + */ + var clickHandler = function (event) { + + // Don't run if event was canceled but still bubbled up + // By @mgreter - https://github.com/cferdinandi/smooth-scroll/pull/462/ + if (event.defaultPrevented) return; + + // Don't run if right-click or command/control + click or shift + click + if (event.button !== 0 || event.metaKey || event.ctrlKey || event.shiftKey) return; + + // Check if event.target has closest() method + // By @totegi - https://github.com/cferdinandi/smooth-scroll/pull/401/ + if (!('closest' in event.target)) return; + + // Check if a smooth scroll link was clicked + toggle = event.target.closest(selector); + if (!toggle || toggle.tagName.toLowerCase() !== 'a' || event.target.closest(settings.ignore)) return; + + // Only run if link is an anchor and points to the current page + if (toggle.hostname !== window.location.hostname || toggle.pathname !== window.location.pathname || !/#/.test(toggle.href)) return; + + // Get an escaped version of the hash + var hash; + try { + hash = escapeCharacters(decodeURIComponent(toggle.hash)); + } catch(e) { + hash = escapeCharacters(toggle.hash); + } + + // Get the anchored element + var anchor; + if (hash === '#') { + if (!settings.topOnEmptyHash) return; + anchor = document.documentElement; + } else { + anchor = document.querySelector(hash); + } + anchor = !anchor && hash === '#top' ? document.documentElement : anchor; + + // If anchored element exists, scroll to it + if (!anchor) return; + event.preventDefault(); + setHistory(settings); + smoothScroll.animateScroll(anchor, toggle); + + }; + + /** + * Animate scroll on popstate events + */ + var popstateHandler = function () { + + // Stop if history.state doesn't exist (ex. if clicking on a broken anchor link). + // fixes `Cannot read property 'smoothScroll' of null` error getting thrown. + if (history.state === null) return; + + // Only run if state is a popstate record for this instantiation + if (!history.state.smoothScroll || history.state.smoothScroll !== JSON.stringify(settings)) return; + + // Get the anchor + var anchor = history.state.anchor; + if (typeof anchor === 'string' && anchor) { + anchor = document.querySelector(escapeCharacters(history.state.anchor)); + if (!anchor) return; + } + + // Animate scroll to anchor link + smoothScroll.animateScroll(anchor, null, {updateURL: false}); + + }; + + /** + * Destroy the current initialization. + */ + smoothScroll.destroy = function () { + + // If plugin isn't already initialized, stop + if (!settings) return; + + // Remove event listeners + document.removeEventListener('click', clickHandler, false); + window.removeEventListener('popstate', popstateHandler, false); + + // Cancel any scrolls-in-progress + smoothScroll.cancelScroll(); + + // Reset variables + settings = null; + toggle = null; + fixedHeader = null; + animationInterval = null; + + }; + + /** + * Initialize Smooth Scroll + * @param {Object} options User settings + */ + var init = function () { + + // feature test + if (!supports()) throw 'Smooth Scroll: This browser does not support the required JavaScript methods and browser APIs.'; + + // Destroy any existing initializations + smoothScroll.destroy(); + + // Selectors and variables + settings = extend(defaults, options || {}); // Merge user options with defaults + fixedHeader = settings.header ? document.querySelector(settings.header) : null; // Get the fixed header + + // When a toggle is clicked, run the click handler + document.addEventListener('click', clickHandler, false); + + // If updateURL and popState are enabled, listen for pop events + if (settings.updateURL && settings.popstate) { + window.addEventListener('popstate', popstateHandler, false); + } + + }; + + + // + // Initialize plugin + // + + init(); + + + // + // Public APIs + // + + return smoothScroll; + + }; + + return SmoothScroll; + +}))); diff --git a/dist/smooth-scroll.polyfills.min.js b/dist/smooth-scroll.polyfills.min.js new file mode 100644 index 0000000..575a67b --- /dev/null +++ b/dist/smooth-scroll.polyfills.min.js @@ -0,0 +1,10 @@ +/*! SmoothScroll v16.1.4 | (c) 2020 Chris Ferdinandi | MIT License | http://github.com/cferdinandi/smooth-scroll */ +!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e=e||self).SmoothScroll=t()}(this,(function(){"use strict";window.Element&&!Element.prototype.closest&&(Element.prototype.closest=function(e){var t,n=(this.document||this.ownerDocument).querySelectorAll(e),o=this;do{for(t=n.length;--t>=0&&n.item(t)!==o;);}while(t<0&&(o=o.parentElement));return o}),function(){if("function"==typeof window.CustomEvent)return!1;function e(e,t){t=t||{bubbles:!1,cancelable:!1,detail:void 0};var n=document.createEvent("CustomEvent");return n.initCustomEvent(e,t.bubbles,t.cancelable,t.detail),n}e.prototype=window.Event.prototype,window.CustomEvent=e}(), +/** + * requestAnimationFrame() polyfill + * By Erik Möller. Fixes from Paul Irish and Tino Zijdel. + * @link http://paulirish.com/2011/requestanimationframe-for-smart-animating/ + * @link http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating + * @license MIT + */ +function(){for(var e=0,t=["ms","moz","webkit","o"],n=0;n=1&&t<=31||127==t||0===i&&t>=48&&t<=57||1===i&&t>=48&&t<=57&&45===r?a+="\\"+t.toString(16)+" ":a+=t>=128||45===t||95===t||t>=48&&t<=57||t>=65&&t<=90||t>=97&&t<=122?n.charAt(i):"\\"+n.charAt(i)}return"#"+a},o=function(){return Math.max(document.body.scrollHeight,document.documentElement.scrollHeight,document.body.offsetHeight,document.documentElement.offsetHeight,document.body.clientHeight,document.documentElement.clientHeight)},i=function(e){return e?(t=e,parseInt(window.getComputedStyle(t).height,10)+e.offsetTop):0;var t},a=function(e,t,n){0===e&&document.body.focus(),n||(e.focus(),document.activeElement!==e&&(e.setAttribute("tabindex","-1"),e.focus(),e.style.outline="none"),window.scrollTo(0,t))},r=function(e,t,n,o){if(t.emitEvents&&"function"==typeof window.CustomEvent){var i=new CustomEvent(e,{bubbles:!0,detail:{anchor:n,toggle:o}});document.dispatchEvent(i)}};return function(c,u){var s,l,d,m,f={};f.cancelScroll=function(e){cancelAnimationFrame(m),m=null,e||r("scrollCancel",s)},f.animateScroll=function(n,c,u){f.cancelScroll();var l=t(s||e,u||{}),w="[object Number]"===Object.prototype.toString.call(n),h=w||!n.tagName?null:n;if(w||h){var p=window.pageYOffset;l.header&&!d&&(d=document.querySelector(l.header));var g,y,v,S=i(d),E=w?n:function(e,t,n,i){var a=0;if(e.offsetParent)do{a+=e.offsetTop,e=e.offsetParent}while(e);return a=Math.max(a-t-n,0),i&&(a=Math.min(a,o()-window.innerHeight)),a}(h,S,parseInt("function"==typeof l.offset?l.offset(n,c):l.offset,10),l.clip),b=E-p,A=o(),O=0,C=function(e,t){var n=t.speedAsDuration?t.speed:Math.abs(e/1e3*t.speed);return t.durationMax&&n>t.durationMax?t.durationMax:t.durationMin&&n1?1:y),window.scrollTo(0,Math.floor(v)),function(e,t){var o=window.pageYOffset;if(e==t||o==t||(p=A)return f.cancelScroll(!0),a(n,t,w),r("scrollStop",l,n,c),g=null,m=null,!0}(v,E)||(m=window.requestAnimationFrame(M),g=e)};0===window.pageYOffset&&window.scrollTo(0,0),function(e,t,n){t||history.pushState&&n.updateURL&&history.pushState({smoothScroll:JSON.stringify(n),anchor:e.id},document.title,e===document.documentElement?"#top":"#"+e.id)}(n,w,l),"matchMedia"in window&&window.matchMedia("(prefers-reduced-motion)").matches?a(n,Math.floor(E),!1):(r("scrollStart",l,n,c),f.cancelScroll(!0),window.requestAnimationFrame(M))}};var w=function(e){if(!e.defaultPrevented&&!(0!==e.button||e.metaKey||e.ctrlKey||e.shiftKey)&&"closest"in e.target&&(l=e.target.closest(c))&&"a"===l.tagName.toLowerCase()&&!e.target.closest(s.ignore)&&l.hostname===window.location.hostname&&l.pathname===window.location.pathname&&/#/.test(l.href)){var t,o;try{t=n(decodeURIComponent(l.hash))}catch(e){t=n(l.hash)}if("#"===t){if(!s.topOnEmptyHash)return;o=document.documentElement}else o=document.querySelector(t);(o=o||"#top"!==t?o:document.documentElement)&&(e.preventDefault(),function(e){if(history.replaceState&&e.updateURL&&!history.state){var t=window.location.hash;t=t||"",history.replaceState({smoothScroll:JSON.stringify(e),anchor:t||window.pageYOffset},document.title,t||window.location.href)}}(s),f.animateScroll(o,l))}},h=function(){if(null!==history.state&&history.state.smoothScroll&&history.state.smoothScroll===JSON.stringify(s)){var e=history.state.anchor;"string"==typeof e&&e&&!(e=document.querySelector(n(history.state.anchor)))||f.animateScroll(e,null,{updateURL:!1})}};f.destroy=function(){s&&(document.removeEventListener("click",w,!1),window.removeEventListener("popstate",h,!1),f.cancelScroll(),s=null,l=null,d=null,m=null)};return function(){if(!("querySelector"in document&&"addEventListener"in window&&"requestAnimationFrame"in window&&"closest"in window.Element.prototype))throw"Smooth Scroll: This browser does not support the required JavaScript methods and browser APIs.";f.destroy(),s=t(e,u||{}),d=s.header?document.querySelector(s.header):null,document.addEventListener("click",w,!1),s.updateURL&&s.popstate&&window.addEventListener("popstate",h,!1)}(),f}})); diff --git a/docs/dist/js/smooth-scroll.js b/docs/dist/js/smooth-scroll.js deleted file mode 100755 index 0c5ca7d..0000000 --- a/docs/dist/js/smooth-scroll.js +++ /dev/null @@ -1,583 +0,0 @@ -/*! - * smooth-scroll v10.2.1: Animate scrolling to anchor links - * (c) 2016 Chris Ferdinandi - * MIT License - * http://github.com/cferdinandi/smooth-scroll - */ - -(function (root, factory) { - if ( typeof define === 'function' && define.amd ) { - define([], factory(root)); - } else if ( typeof exports === 'object' ) { - module.exports = factory(root); - } else { - root.smoothScroll = factory(root); - } -})(typeof global !== 'undefined' ? global : this.window || this.global, (function (root) { - - 'use strict'; - - // - // Variables - // - - var smoothScroll = {}; // Object for public APIs - var supports = 'querySelector' in document && 'addEventListener' in root; // Feature test - var settings, anchor, toggle, fixedHeader, headerHeight, eventTimeout, animationInterval; - - // Default settings - var defaults = { - selector: '[data-scroll]', - selectorHeader: null, - speed: 500, - easing: 'easeInOutCubic', - offset: 0, - callback: function () {} - }; - - - // - // Methods - // - - /** - * Merge two or more objects. Returns a new object. - * @private - * @param {Boolean} deep If true, do a deep (or recursive) merge [optional] - * @param {Object} objects The objects to merge together - * @returns {Object} Merged values of defaults and options - */ - var extend = function () { - - // Variables - var extended = {}; - var deep = false; - var i = 0; - var length = arguments.length; - - // Check if a deep merge - if ( Object.prototype.toString.call( arguments[0] ) === '[object Boolean]' ) { - deep = arguments[0]; - i++; - } - - // Merge the object into the extended object - var merge = function (obj) { - for ( var prop in obj ) { - if ( Object.prototype.hasOwnProperty.call( obj, prop ) ) { - // If deep merge and property is an object, merge properties - if ( deep && Object.prototype.toString.call(obj[prop]) === '[object Object]' ) { - extended[prop] = extend( true, extended[prop], obj[prop] ); - } else { - extended[prop] = obj[prop]; - } - } - } - }; - - // Loop through each object and conduct a merge - for ( ; i < length; i++ ) { - var obj = arguments[i]; - merge(obj); - } - - return extended; - - }; - - /** - * Get the height of an element. - * @private - * @param {Node} elem The element to get the height of - * @return {Number} The element's height in pixels - */ - var getHeight = function ( elem ) { - return Math.max( elem.scrollHeight, elem.offsetHeight, elem.clientHeight ); - }; - - /** - * Get the closest matching element up the DOM tree. - * @private - * @param {Element} elem Starting element - * @param {String} selector Selector to match against - * @return {Boolean|Element} Returns null if not match found - */ - var getClosest = function ( elem, selector ) { - - // Element.matches() polyfill - if (!Element.prototype.matches) { - Element.prototype.matches = - Element.prototype.matchesSelector || - Element.prototype.mozMatchesSelector || - Element.prototype.msMatchesSelector || - Element.prototype.oMatchesSelector || - Element.prototype.webkitMatchesSelector || - function(s) { - var matches = (this.document || this.ownerDocument).querySelectorAll(s), - i = matches.length; - while (--i >= 0 && matches.item(i) !== this) {} - return i > -1; - }; - } - - // Get closest match - for ( ; elem && elem !== document; elem = elem.parentNode ) { - if ( elem.matches( selector ) ) return elem; - } - - return null; - - }; - - /** - * Escape special characters for use with querySelector - * @private - * @param {String} id The anchor ID to escape - * @author Mathias Bynens - * @link https://github.com/mathiasbynens/CSS.escape - */ - var escapeCharacters = function ( id ) { - - // Remove leading hash - if ( id.charAt(0) === '#' ) { - id = id.substr(1); - } - - var string = String(id); - var length = string.length; - var index = -1; - var codeUnit; - var result = ''; - var firstCodeUnit = string.charCodeAt(0); - while (++index < length) { - codeUnit = string.charCodeAt(index); - // Note: there’s no need to special-case astral symbols, surrogate - // pairs, or lone surrogates. - - // If the character is NULL (U+0000), then throw an - // `InvalidCharacterError` exception and terminate these steps. - if (codeUnit === 0x0000) { - throw new InvalidCharacterError( - 'Invalid character: the input contains U+0000.' - ); - } - - if ( - // If the character is in the range [\1-\1F] (U+0001 to U+001F) or is - // U+007F, […] - (codeUnit >= 0x0001 && codeUnit <= 0x001F) || codeUnit == 0x007F || - // If the character is the first character and is in the range [0-9] - // (U+0030 to U+0039), […] - (index === 0 && codeUnit >= 0x0030 && codeUnit <= 0x0039) || - // If the character is the second character and is in the range [0-9] - // (U+0030 to U+0039) and the first character is a `-` (U+002D), […] - ( - index === 1 && - codeUnit >= 0x0030 && codeUnit <= 0x0039 && - firstCodeUnit === 0x002D - ) - ) { - // http://dev.w3.org/csswg/cssom/#escape-a-character-as-code-point - result += '\\' + codeUnit.toString(16) + ' '; - continue; - } - - // If the character is not handled by one of the above rules and is - // greater than or equal to U+0080, is `-` (U+002D) or `_` (U+005F), or - // is in one of the ranges [0-9] (U+0030 to U+0039), [A-Z] (U+0041 to - // U+005A), or [a-z] (U+0061 to U+007A), […] - if ( - codeUnit >= 0x0080 || - codeUnit === 0x002D || - codeUnit === 0x005F || - codeUnit >= 0x0030 && codeUnit <= 0x0039 || - codeUnit >= 0x0041 && codeUnit <= 0x005A || - codeUnit >= 0x0061 && codeUnit <= 0x007A - ) { - // the character itself - result += string.charAt(index); - continue; - } - - // Otherwise, the escaped character. - // http://dev.w3.org/csswg/cssom/#escape-a-character - result += '\\' + string.charAt(index); - - } - - return '#' + result; - - }; - - /** - * Calculate the easing pattern - * @private - * @link https://gist.github.com/gre/1650294 - * @param {String} type Easing pattern - * @param {Number} time Time animation should take to complete - * @returns {Number} - */ - var easingPattern = function ( type, time ) { - var pattern; - if ( type === 'easeInQuad' ) pattern = time * time; // accelerating from zero velocity - if ( type === 'easeOutQuad' ) pattern = time * (2 - time); // decelerating to zero velocity - if ( type === 'easeInOutQuad' ) pattern = time < 0.5 ? 2 * time * time : -1 + (4 - 2 * time) * time; // acceleration until halfway, then deceleration - if ( type === 'easeInCubic' ) pattern = time * time * time; // accelerating from zero velocity - if ( type === 'easeOutCubic' ) pattern = (--time) * time * time + 1; // decelerating to zero velocity - if ( type === 'easeInOutCubic' ) pattern = time < 0.5 ? 4 * time * time * time : (time - 1) * (2 * time - 2) * (2 * time - 2) + 1; // acceleration until halfway, then deceleration - if ( type === 'easeInQuart' ) pattern = time * time * time * time; // accelerating from zero velocity - if ( type === 'easeOutQuart' ) pattern = 1 - (--time) * time * time * time; // decelerating to zero velocity - if ( type === 'easeInOutQuart' ) pattern = time < 0.5 ? 8 * time * time * time * time : 1 - 8 * (--time) * time * time * time; // acceleration until halfway, then deceleration - if ( type === 'easeInQuint' ) pattern = time * time * time * time * time; // accelerating from zero velocity - if ( type === 'easeOutQuint' ) pattern = 1 + (--time) * time * time * time * time; // decelerating to zero velocity - if ( type === 'easeInOutQuint' ) pattern = time < 0.5 ? 16 * time * time * time * time * time : 1 + 16 * (--time) * time * time * time * time; // acceleration until halfway, then deceleration - return pattern || time; // no easing, no acceleration - }; - - /** - * Calculate how far to scroll - * @private - * @param {Element} anchor The anchor element to scroll to - * @param {Number} headerHeight Height of a fixed header, if any - * @param {Number} offset Number of pixels by which to offset scroll - * @returns {Number} - */ - var getEndLocation = function ( anchor, headerHeight, offset ) { - var location = 0; - if (anchor.offsetParent) { - do { - location += anchor.offsetTop; - anchor = anchor.offsetParent; - } while (anchor); - } - location = Math.max(location - headerHeight - offset, 0); - return Math.min(location, getDocumentHeight() - getViewportHeight()); - }; - - /** - * Determine the viewport's height - * @private - * @returns {Number} - */ - var getViewportHeight = function() { - return Math.max( document.documentElement.clientHeight, root.innerHeight || 0 ); - }; - - /** - * Determine the document's height - * @private - * @returns {Number} - */ - var getDocumentHeight = function () { - return Math.max( - document.body.scrollHeight, document.documentElement.scrollHeight, - document.body.offsetHeight, document.documentElement.offsetHeight, - document.body.clientHeight, document.documentElement.clientHeight - ); - }; - - /** - * Convert data-options attribute into an object of key/value pairs - * @private - * @param {String} options Link-specific options as a data attribute string - * @returns {Object} - */ - var getDataOptions = function ( options ) { - return !options || !(typeof JSON === 'object' && typeof JSON.parse === 'function') ? {} : JSON.parse( options ); - }; - - /** - * Get the height of the fixed header - * @private - * @param {Node} header The header - * @return {Number} The height of the header - */ - var getHeaderHeight = function ( header ) { - return !header ? 0 : ( getHeight( header ) + header.offsetTop ); - }; - - /** - * Bring the anchored element into focus - * @private - */ - var adjustFocus = function ( anchor, endLocation, isNum ) { - - // Don't run if scrolling to a number on the page - if ( isNum ) return; - - // Otherwise, bring anchor element into focus - anchor.focus(); - if ( document.activeElement.id !== anchor.id ) { - anchor.setAttribute( 'tabindex', '-1' ); - anchor.focus(); - anchor.style.outline = 'none'; - } - root.scrollTo( 0 , endLocation ); - - }; - - /** - * Start/stop the scrolling animation - * @public - * @param {Node|Number} anchor The element or position to scroll to - * @param {Element} toggle The element that toggled the scroll event - * @param {Object} options - */ - smoothScroll.animateScroll = function ( anchor, toggle, options ) { - - // Options and overrides - var overrides = getDataOptions( toggle ? toggle.getAttribute('data-options') : null ); - var animateSettings = extend( settings || defaults, options || {}, overrides ); // Merge user options with defaults - - // Selectors and variables - var isNum = Object.prototype.toString.call( anchor ) === '[object Number]' ? true : false; - var anchorElem = isNum || !anchor.tagName ? null : anchor; - if ( !isNum && !anchorElem ) return; - var startLocation = root.pageYOffset; // Current location on the page - if ( animateSettings.selectorHeader && !fixedHeader ) { - // Get the fixed header if not already set - fixedHeader = document.querySelector( animateSettings.selectorHeader ); - } - if ( !headerHeight ) { - // Get the height of a fixed header if one exists and not already set - headerHeight = getHeaderHeight( fixedHeader ); - } - var endLocation = isNum ? anchor : getEndLocation( anchorElem, headerHeight, parseInt(animateSettings.offset, 10) ); // Location to scroll to - var distance = endLocation - startLocation; // distance to travel - var documentHeight = getDocumentHeight(); - var timeLapsed = 0; - var percentage, position; - - /** - * Stop the scroll animation when it reaches its target (or the bottom/top of page) - * @private - * @param {Number} position Current position on the page - * @param {Number} endLocation Scroll to location - * @param {Number} animationInterval How much to scroll on this loop - */ - var stopAnimateScroll = function ( position, endLocation, animationInterval ) { - var currentLocation = root.pageYOffset; - if ( position == endLocation || currentLocation == endLocation || ( (root.innerHeight + currentLocation) >= documentHeight ) ) { - - // Clear the animation timer - clearInterval(animationInterval); - - // Bring the anchored element into focus - adjustFocus( anchor, endLocation, isNum ); - - // Run callback after animation complete - animateSettings.callback( anchor, toggle ); - - } - }; - - /** - * Loop scrolling animation - * @private - */ - var loopAnimateScroll = function () { - timeLapsed += 16; - percentage = ( timeLapsed / parseInt(animateSettings.speed, 10) ); - percentage = ( percentage > 1 ) ? 1 : percentage; - position = startLocation + ( distance * easingPattern(animateSettings.easing, percentage) ); - root.scrollTo( 0, Math.floor(position) ); - stopAnimateScroll(position, endLocation, animationInterval); - }; - - /** - * Set interval timer - * @private - */ - var startAnimateScroll = function () { - clearInterval(animationInterval); - animationInterval = setInterval(loopAnimateScroll, 16); - }; - - /** - * Reset position to fix weird iOS bug - * @link https://github.com/cferdinandi/smooth-scroll/issues/45 - */ - if ( root.pageYOffset === 0 ) { - root.scrollTo( 0, 0 ); - } - - // Start scrolling animation - startAnimateScroll(); - - }; - - /** - * Handle has change event - * @private - */ - var hashChangeHandler = function (event) { - - // Get hash from URL - // var hash = decodeURIComponent( escapeCharacters( root.location.hash ) ); - var hash; - try { - hash = escapeCharacters( decodeURIComponent( root.location.hash ) ); - } catch(e) { - hash = escapeCharacters( root.location.hash ); - } - - // Only run if there's an anchor element to scroll to - if ( !anchor ) return; - - // Reset the anchor element's ID - anchor.id = anchor.getAttribute( 'data-scroll-id' ); - - // Scroll to the anchored content - smoothScroll.animateScroll( anchor, toggle ); - - // Reset anchor and toggle - anchor = null; - toggle = null; - - }; - - /** - * If smooth scroll element clicked, animate scroll - * @private - */ - var clickHandler = function (event) { - - // Don't run if right-click or command/control + click - if ( event.button !== 0 || event.metaKey || event.ctrlKey ) return; - - // Check if a smooth scroll link was clicked - toggle = getClosest( event.target, settings.selector ); - if ( !toggle || toggle.tagName.toLowerCase() !== 'a' ) return; - - // Only run if link is an anchor and points to the current page - if ( toggle.hostname !== root.location.hostname || toggle.pathname !== root.location.pathname || !/#/.test(toggle.href) ) return; - - // Get the sanitized hash - // var hash = decodeURIComponent( escapeCharacters( toggle.hash ) ); - // console.log(hash); - var hash; - try { - hash = escapeCharacters( decodeURIComponent( toggle.hash ) ); - } catch(e) { - hash = escapeCharacters( toggle.hash ); - } - - // If the hash is empty, scroll to the top of the page - if ( hash === '#' ) { - - // Prevent default link behavior - event.preventDefault(); - - // Set the anchored element - anchor = document.body; - - // Save or create the ID as a data attribute and remove it (prevents scroll jump) - var id = anchor.id ? anchor.id : 'smooth-scroll-top'; - anchor.setAttribute( 'data-scroll-id', id ); - anchor.id = ''; - - // If no hash change event will happen, fire manually - // Otherwise, update the hash - if ( root.location.hash.substring(1) === id ) { - hashChangeHandler(); - } else { - root.location.hash = id; - } - - return; - - } - - // Get the anchored element - anchor = document.querySelector( hash ); - - // If anchored element exists, save the ID as a data attribute and remove it (prevents scroll jump) - if ( !anchor ) return; - anchor.setAttribute( 'data-scroll-id', anchor.id ); - anchor.id = ''; - - // If no hash change event will happen, fire manually - if ( toggle.hash === root.location.hash ) { - event.preventDefault(); - hashChangeHandler(); - } - - }; - - /** - * On window scroll and resize, only run events at a rate of 15fps for better performance - * @private - * @param {Function} eventTimeout Timeout function - * @param {Object} settings - */ - var resizeThrottler = function (event) { - if ( !eventTimeout ) { - eventTimeout = setTimeout((function() { - eventTimeout = null; // Reset timeout - headerHeight = getHeaderHeight( fixedHeader ); // Get the height of a fixed header if one exists - }), 66); - } - }; - - /** - * Destroy the current initialization. - * @public - */ - smoothScroll.destroy = function () { - - // If plugin isn't already initialized, stop - if ( !settings ) return; - - // Remove event listeners - document.removeEventListener( 'click', clickHandler, false ); - root.removeEventListener( 'resize', resizeThrottler, false ); - - // Reset varaibles - settings = null; - anchor = null; - toggle = null; - fixedHeader = null; - headerHeight = null; - eventTimeout = null; - animationInterval = null; - }; - - /** - * Initialize Smooth Scroll - * @public - * @param {Object} options User settings - */ - smoothScroll.init = function ( options ) { - - // feature test - if ( !supports ) return; - - // Destroy any existing initializations - smoothScroll.destroy(); - - // Selectors and variables - settings = extend( defaults, options || {} ); // Merge user options with defaults - fixedHeader = settings.selectorHeader ? document.querySelector( settings.selectorHeader ) : null; // Get the fixed header - headerHeight = getHeaderHeight( fixedHeader ); - - // When a toggle is clicked, run the click handler - document.addEventListener( 'click', clickHandler, false ); - - // Listen for hash changes - root.addEventListener('hashchange', hashChangeHandler, false); - - // If window is resized and there's a fixed header, recalculate its size - if ( fixedHeader ) { - root.addEventListener( 'resize', resizeThrottler, false ); - } - - }; - - - // - // Public APIs - // - - return smoothScroll; - -})); \ No newline at end of file diff --git a/docs/dist/js/smooth-scroll.min.js b/docs/dist/js/smooth-scroll.min.js deleted file mode 100755 index d952995..0000000 --- a/docs/dist/js/smooth-scroll.min.js +++ /dev/null @@ -1,2 +0,0 @@ -/*! smooth-scroll v10.2.1 | (c) 2016 Chris Ferdinandi | MIT License | http://github.com/cferdinandi/smooth-scroll */ -!(function(e,t){"function"==typeof define&&define.amd?define([],t(e)):"object"==typeof exports?module.exports=t(e):e.smoothScroll=t(e)})("undefined"!=typeof global?global:this.window||this.global,(function(e){"use strict";var t,n,o,r,a,c,l,i={},u="querySelector"in document&&"addEventListener"in e,s={selector:"[data-scroll]",selectorHeader:null,speed:500,easing:"easeInOutCubic",offset:0,callback:function(){}},d=function(){var e={},t=!1,n=0,o=arguments.length;"[object Boolean]"===Object.prototype.toString.call(arguments[0])&&(t=arguments[0],n++);for(var r=function(n){for(var o in n)Object.prototype.hasOwnProperty.call(n,o)&&(t&&"[object Object]"===Object.prototype.toString.call(n[o])?e[o]=d(!0,e[o],n[o]):e[o]=n[o])};n=0&&t.item(n)!==this;);return n>-1});e&&e!==document;e=e.parentNode)if(e.matches(t))return e;return null},m=function(e){"#"===e.charAt(0)&&(e=e.substr(1));for(var t,n=String(e),o=n.length,r=-1,a="",c=n.charCodeAt(0);++r=1&&t<=31||127==t||0===r&&t>=48&&t<=57||1===r&&t>=48&&t<=57&&45===c?"\\"+t.toString(16)+" ":t>=128||45===t||95===t||t>=48&&t<=57||t>=65&&t<=90||t>=97&&t<=122?n.charAt(r):"\\"+n.charAt(r)}return"#"+a},p=function(e,t){var n;return"easeInQuad"===e&&(n=t*t),"easeOutQuad"===e&&(n=t*(2-t)),"easeInOutQuad"===e&&(n=t<.5?2*t*t:-1+(4-2*t)*t),"easeInCubic"===e&&(n=t*t*t),"easeOutCubic"===e&&(n=--t*t*t+1),"easeInOutCubic"===e&&(n=t<.5?4*t*t*t:(t-1)*(2*t-2)*(2*t-2)+1),"easeInQuart"===e&&(n=t*t*t*t),"easeOutQuart"===e&&(n=1- --t*t*t*t),"easeInOutQuart"===e&&(n=t<.5?8*t*t*t*t:1-8*--t*t*t*t),"easeInQuint"===e&&(n=t*t*t*t*t),"easeOutQuint"===e&&(n=1+--t*t*t*t*t),"easeInOutQuint"===e&&(n=t<.5?16*t*t*t*t*t:1+16*--t*t*t*t*t),n||t},g=function(e,t,n){var o=0;if(e.offsetParent)do o+=e.offsetTop,e=e.offsetParent;while(e);return o=Math.max(o-t-n,0),Math.min(o,v()-b())},b=function(){return Math.max(document.documentElement.clientHeight,e.innerHeight||0)},v=function(){return Math.max(document.body.scrollHeight,document.documentElement.scrollHeight,document.body.offsetHeight,document.documentElement.offsetHeight,document.body.clientHeight,document.documentElement.clientHeight)},y=function(e){return e&&"object"==typeof JSON&&"function"==typeof JSON.parse?JSON.parse(e):{}},O=function(e){return e?f(e)+e.offsetTop:0},S=function(t,n,o){o||(t.focus(),document.activeElement.id!==t.id&&(t.setAttribute("tabindex","-1"),t.focus(),t.style.outline="none"),e.scrollTo(0,n))};i.animateScroll=function(n,o,c){var i=y(o?o.getAttribute("data-options"):null),u=d(t||s,c||{},i),f="[object Number]"===Object.prototype.toString.call(n),h=f||!n.tagName?null:n;if(f||h){var m=e.pageYOffset;u.selectorHeader&&!r&&(r=document.querySelector(u.selectorHeader)),a||(a=O(r));var b,E,I=f?n:g(h,a,parseInt(u.offset,10)),H=I-m,A=v(),j=0,C=function(t,r,a){var c=e.pageYOffset;(t==r||c==r||e.innerHeight+c>=A)&&(clearInterval(a),S(n,r,f),u.callback(n,o))},M=function(){j+=16,b=j/parseInt(u.speed,10),b=b>1?1:b,E=m+H*p(u.easing,b),e.scrollTo(0,Math.floor(E)),C(E,I,l)},w=function(){clearInterval(l),l=setInterval(M,16)};0===e.pageYOffset&&e.scrollTo(0,0),w()}};var E=function(t){var r;try{r=m(decodeURIComponent(e.location.hash))}catch(t){r=m(e.location.hash)}n&&(n.id=n.getAttribute("data-scroll-id"),i.animateScroll(n,o),n=null,o=null)},I=function(r){if(0===r.button&&!r.metaKey&&!r.ctrlKey&&(o=h(r.target,t.selector),o&&"a"===o.tagName.toLowerCase()&&o.hostname===e.location.hostname&&o.pathname===e.location.pathname&&/#/.test(o.href))){var a;try{a=m(decodeURIComponent(o.hash))}catch(e){a=m(o.hash)}if("#"===a){r.preventDefault(),n=document.body;var c=n.id?n.id:"smooth-scroll-top";return n.setAttribute("data-scroll-id",c),n.id="",void(e.location.hash.substring(1)===c?E():e.location.hash=c)}n=document.querySelector(a),n&&(n.setAttribute("data-scroll-id",n.id),n.id="",o.hash===e.location.hash&&(r.preventDefault(),E()))}},H=function(e){c||(c=setTimeout((function(){c=null,a=O(r)}),66))};return i.destroy=function(){t&&(document.removeEventListener("click",I,!1),e.removeEventListener("resize",H,!1),t=null,n=null,o=null,r=null,a=null,c=null,l=null)},i.init=function(n){u&&(i.destroy(),t=d(s,n||{}),r=t.selectorHeader?document.querySelector(t.selectorHeader):null,a=O(r),document.addEventListener("click",I,!1),e.addEventListener("hashchange",E,!1),r&&e.addEventListener("resize",H,!1))},i})); \ No newline at end of file diff --git a/docs/index.html b/docs/index.html deleted file mode 100644 index e61cf7c..0000000 --- a/docs/index.html +++ /dev/null @@ -1,99 +0,0 @@ - - - - - - Smooth Scroll - - - - - - - - -
- - - -
-

- Linear
- Linear (no other options)
-

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- Ease-In
- Quad
- Cubic
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- - - - - - - - \ No newline at end of file diff --git a/gulpfile.js b/gulpfile.js index 63be8c9..0b20e1e 100755 --- a/gulpfile.js +++ b/gulpfile.js @@ -1,32 +1,17 @@ /** - * Gulp Packages + * Settings + * Turn on/off build features */ -// General -var gulp = require('gulp'); -var fs = require('fs'); -var del = require('del'); -var lazypipe = require('lazypipe'); -var plumber = require('gulp-plumber'); -var flatten = require('gulp-flatten'); -var tap = require('gulp-tap'); -var rename = require('gulp-rename'); -var header = require('gulp-header'); -var footer = require('gulp-footer'); -var watch = require('gulp-watch'); -var livereload = require('gulp-livereload'); -var package = require('./package.json'); - -// Scripts and tests -var jshint = require('gulp-jshint'); -var stylish = require('jshint-stylish'); -var concat = require('gulp-concat'); -var uglify = require('gulp-uglify'); -var optimizejs = require('gulp-optimize-js'); - -// Docs -var markdown = require('gulp-markdown'); -var fileinclude = require('gulp-file-include'); +var settings = { + clean: true, + scripts: true, + polyfills: true, + styles: false, + svgs: false, + copy: true, + reload: true +}; /** @@ -34,18 +19,26 @@ var fileinclude = require('gulp-file-include'); */ var paths = { - input: 'src/**/*', + input: 'src/', output: 'dist/', scripts: { input: 'src/js/*', - output: 'dist/js/' + polyfills: '.polyfill.js', + output: 'dist/' + }, + styles: { + input: 'src/sass/**/*.{scss,sass}', + output: 'dist/css/' + }, + svgs: { + input: 'src/svg/*.svg', + output: 'dist/svg/' }, - docs: { - input: 'src/docs/*.{html,md,markdown}', - output: 'docs/', - templates: 'src/docs/_templates/', - assets: 'src/docs/assets/**' - } + copy: { + input: 'src/copy/*', + output: './' + }, + reload: './' }; @@ -54,146 +47,269 @@ var paths = { */ var banner = { - full : + full: '/*!\n' + - ' * <%= package.name %> v<%= package.version %>: <%= package.description %>\n' + + ' * <%= package.name %> v<%= package.version %>\n' + + ' * <%= package.description %>\n' + ' * (c) ' + new Date().getFullYear() + ' <%= package.author.name %>\n' + - ' * MIT License\n' + + ' * <%= package.license %> License\n' + ' * <%= package.repository.url %>\n' + ' */\n\n', - min : + min: '/*!' + ' <%= package.name %> v<%= package.version %>' + ' | (c) ' + new Date().getFullYear() + ' <%= package.author.name %>' + - ' | MIT License' + + ' | <%= package.license %> License' + ' | <%= package.repository.url %>' + ' */\n' }; /** - * Gulp Taks + * Gulp Packages + */ + +// General +var {gulp, src, dest, watch, series, parallel} = require('gulp'); +var del = require('del'); +var flatmap = require('gulp-flatmap'); +var lazypipe = require('lazypipe'); +var rename = require('gulp-rename'); +var header = require('gulp-header'); +var package = require('./package.json'); + +// Scripts +var jshint = require('gulp-jshint'); +var stylish = require('jshint-stylish'); +var concat = require('gulp-concat'); +var uglify = require('gulp-uglify'); +var optimizejs = require('gulp-optimize-js'); + +// Styles +var sass = require('gulp-sass'); +var prefix = require('gulp-autoprefixer'); +var minify = require('gulp-cssnano'); + +// SVGs +var svgmin = require('gulp-svgmin'); + +// BrowserSync +var browserSync = require('browser-sync'); + + +/** + * Gulp Tasks */ +// Remove pre-existing content from output folders +var cleanDist = function (done) { + + // Make sure this feature is activated before running + if (!settings.clean) return done(); + + // Clean the dist folder + del.sync([ + paths.output + ]); + + // Signal completion + return done(); + +}; + +// Repeated JavaScript tasks +var jsTasks = lazypipe() + .pipe(header, banner.full, {package: package}) + .pipe(optimizejs) + .pipe(dest, paths.scripts.output) + .pipe(rename, {suffix: '.min'}) + .pipe(uglify) + .pipe(optimizejs) + .pipe(header, banner.min, {package: package}) + .pipe(dest, paths.scripts.output); + // Lint, minify, and concatenate scripts -gulp.task('build:scripts', ['clean:dist'], function() { - var jsTasks = lazypipe() - .pipe(header, banner.full, { package : package }) - .pipe(optimizejs) - .pipe(gulp.dest, paths.scripts.output) - .pipe(rename, { suffix: '.min' }) - .pipe(uglify) - .pipe(optimizejs) - .pipe(header, banner.min, { package : package }) - .pipe(gulp.dest, paths.scripts.output); - - return gulp.src(paths.scripts.input) - .pipe(plumber()) - .pipe(tap(function (file, t) { - if ( file.isDirectory() ) { - var name = file.relative + '.js'; - return gulp.src(file.path + '/*.js') - .pipe(concat(name)) +var buildScripts = function (done) { + + // Make sure this feature is activated before running + if (!settings.scripts) return done(); + + // Run tasks on script files + src(paths.scripts.input) + .pipe(flatmap(function(stream, file) { + + // If the file is a directory + if (file.isDirectory()) { + + // Setup a suffix variable + var suffix = ''; + + // If separate polyfill files enabled + if (settings.polyfills) { + + // Update the suffix + suffix = '.polyfills'; + + // Grab files that aren't polyfills, concatenate them, and process them + src([file.path + '/*.js', '!' + file.path + '/*' + paths.scripts.polyfills]) + .pipe(concat(file.relative + '.js')) + .pipe(jsTasks()); + + } + + // Grab all files and concatenate them + // If separate polyfills enabled, this will have .polyfills in the filename + src(file.path + '/*.js') + .pipe(concat(file.relative + suffix + '.js')) .pipe(jsTasks()); + + return stream; + } - })) - .pipe(jsTasks()); -}); + + // Otherwise, process the file + return stream.pipe(jsTasks()); + + })); + + // Signal completion + done(); + +}; // Lint scripts -gulp.task('lint:scripts', function () { - return gulp.src(paths.scripts.input) - .pipe(plumber()) +var lintScripts = function (done) { + + // Make sure this feature is activated before running + if (!settings.scripts) return done(); + + // Lint scripts + src(paths.scripts.input) .pipe(jshint()) .pipe(jshint.reporter('jshint-stylish')); -}); -// Remove pre-existing content from output folders -gulp.task('clean:dist', function () { - del.sync([ - paths.output - ]); -}); - -// Generate documentation -gulp.task('build:docs', ['compile', 'clean:docs'], function() { - return gulp.src(paths.docs.input) - .pipe(plumber()) - .pipe(fileinclude({ - prefix: '@@', - basepath: '@file' + // Signal completion + done(); + +}; + +// Process, lint, and minify Sass files +var buildStyles = function (done) { + + // Make sure this feature is activated before running + if (!settings.styles) return done(); + + // Run tasks on all Sass files + src(paths.styles.input) + .pipe(sass({ + outputStyle: 'expanded', + sourceComments: true })) - .pipe(tap(function (file, t) { - if ( /\.md|\.markdown/.test(file.path) ) { - return t.through(markdown); + .pipe(prefix({ + browsers: ['last 2 version', '> 0.25%'], + cascade: true, + remove: true + })) + .pipe(header(banner.full, { package : package })) + .pipe(dest(paths.styles.output)) + .pipe(rename({suffix: '.min'})) + .pipe(minify({ + discardComments: { + removeAll: true } })) - .pipe(header(fs.readFileSync(paths.docs.templates + '/_header.html', 'utf8'))) - .pipe(footer(fs.readFileSync(paths.docs.templates + '/_footer.html', 'utf8'))) - .pipe(gulp.dest(paths.docs.output)); -}); - -// Copy distribution files to docs -gulp.task('copy:dist', ['compile', 'clean:docs'], function() { - return gulp.src(paths.output + '/**') - .pipe(plumber()) - .pipe(gulp.dest(paths.docs.output + '/dist')); -}); - -// Copy documentation assets to docs -gulp.task('copy:assets', ['clean:docs'], function() { - return gulp.src(paths.docs.assets) - .pipe(plumber()) - .pipe(gulp.dest(paths.docs.output + '/assets')); -}); - -// Remove prexisting content from docs folder -gulp.task('clean:docs', function () { - return del.sync(paths.docs.output); -}); - -// Spin up livereload server and listen for file changes -gulp.task('listen', function () { - livereload.listen(); - gulp.watch(paths.input).on('change', function(file) { - gulp.start('default'); - gulp.start('refresh'); + .pipe(header(banner.min, { package : package })) + .pipe(dest(paths.styles.output)); + + // Signal completion + done(); + +}; + +// Optimize SVG files +var buildSVGs = function (done) { + + // Make sure this feature is activated before running + if (!settings.svgs) return done(); + + // Optimize SVG files + src(paths.svgs.input) + .pipe(svgmin()) + .pipe(dest(paths.svgs.output)); + + // Signal completion + done(); + +}; + +// Copy static files into output folder +var copyFiles = function (done) { + + // Make sure this feature is activated before running + if (!settings.copy) return done(); + + // Copy static files + src(paths.copy.input) + .pipe(dest(paths.copy.output)); + + // Signal completion + done(); + +}; + +// Watch for changes to the src directory +var startServer = function (done) { + + // Make sure this feature is activated before running + if (!settings.reload) return done(); + + // Initialize BrowserSync + browserSync.init({ + server: { + baseDir: paths.reload + } }); -}); -// Run livereload after file change -gulp.task('refresh', ['compile', 'docs'], function () { - livereload.changed(); -}); + // Signal completion + done(); + +}; + +// Reload the browser when files change +var reloadBrowser = function (done) { + if (!settings.reload) return done(); + browserSync.reload(); + done(); +}; + +// Watch for changes +var watchSource = function (done) { + watch(paths.input, series(exports.default, reloadBrowser)); + done(); +}; /** - * Task Runners + * Export Tasks */ -// Compile files -gulp.task('compile', [ - 'lint:scripts', - 'clean:dist', - 'build:scripts' -]); - -// Generate documentation -gulp.task('docs', [ - 'clean:docs', - 'build:docs', - 'copy:dist', - 'copy:assets' -]); - -// Compile files and generate docs (default) -gulp.task('default', [ - 'compile', - 'docs' -]); - -// Compile files and generate docs when something changes -gulp.task('watch', [ - 'listen', - 'default' -]); \ No newline at end of file +// Default task +// gulp +exports.default = series( + cleanDist, + parallel( + buildScripts, + lintScripts, + buildStyles, + buildSVGs, + copyFiles + ) +); + +// Watch and reload +// gulp watch +exports.watch = series( + exports.default, + startServer, + watchSource +); \ No newline at end of file diff --git a/index.html b/index.html new file mode 100755 index 0000000..a10fdc9 --- /dev/null +++ b/index.html @@ -0,0 +1,149 @@ + + + + + + Smooth Scroll + + + + + + + + +
+ + + +
+

+ Linear
+ Linear (no other options)
+

+ +

+ Ease-In
+ Quad
+ Cubic
+ Quart
+ Quint +

+ +

+ Ease-In-Out
+ Quad
+ Cubic
+ Quart
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+ +

+ Ease-Out
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+ +

+ Non-ASCII Characters
+ 中文 +

+ +

+ .
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+ +

+ 中文 + More Special Characters +

+ +

+ .
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myymälä

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+ +

Back to the top

+
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+ + + + + + + + \ No newline at end of file diff --git a/jump-to-top.html b/jump-to-top.html new file mode 100644 index 0000000..393e4ad --- /dev/null +++ b/jump-to-top.html @@ -0,0 +1,60 @@ + + + + + + Smooth Scroll + + + + + + + + +
+ + + +
+ +

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+ +

Back to the top

+
+
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"git", - "url": "http://github.com/cferdinandi/smooth-scroll" - }, - "devDependencies": { - "gulp": "^3.9.1", - "node-fs": "^0.1.7", - "del": "^2.2.0", - "lazypipe": "^1.0.1", - "gulp-plumber": "^1.1.0", - "gulp-flatten": "^0.3.1", - "gulp-tap": "^0.1.3", - "gulp-rename": "^1.2.2", - "gulp-header": "^1.8.8", - "gulp-footer": "^1.0.5", - "gulp-watch": "^4.3.9", - "gulp-livereload": "^3.8.1", - "gulp-jshint": "^2.0.1", - "jshint-stylish": "^2.2.1", - "gulp-concat": "^2.6.0", - "gulp-uglify": "^2.0.0", - "gulp-optimize-js": "^1.0.2", - "gulp-markdown": "^1.2.0", - "gulp-file-include": "^0.14.0" - } + "name": "smooth-scroll", + "version": "16.1.4", + "description": "Animate scrolling to anchor links", + "main": "./dist/smooth-scroll.polyfills.min.js", + "author": { + "name": "Chris Ferdinandi", + "url": "http://gomakethings.com/" + }, + "license": "MIT", + "repository": { + "type": "git", + "url": "http://github.com/cferdinandi/smooth-scroll" + }, + "scripts": { + "js": "rollup --config", + "build": "npm run js" + }, + "devDependencies": { + "rollup": "^2.6.1", + "rollup-plugin-terser": "^5.3.0", + "sass": "^1.26.5", + "imagemin-cli": "^5.1.0", + "imagemin-mozjpeg": "^8.0.0", + "imagemin-pngcrush": "^6.0.0", + "imagemin-pngquant": "^8.0.0", + "imagemin-zopfli": "^6.0.0", + "svgo": "^1.3.2" + } } diff --git a/rollup.config.js b/rollup.config.js new file mode 100644 index 0000000..086774b --- /dev/null +++ b/rollup.config.js @@ -0,0 +1,72 @@ +// Plugins +import { terser } from 'rollup-plugin-terser'; +import pkg from './package.json'; + + +// Configs +var configs = { + name: 'SmoothScroll', + files: ['smooth-scroll.js', 'smooth-scroll.polyfills.js'], + formats: ['umd'], + default: 'umd', + pathIn: 'src/', + pathOut: 'dist/', + minify: true +}; + +// Banner +var banner = `/*! ${configs.name ? configs.name : pkg.name} v${pkg.version} | (c) ${new Date().getFullYear()} ${pkg.author.name} | ${pkg.license} License | ${pkg.repository.url} */`; + +var createOutput = function (filename, minify) { + return configs.formats.map(function (format) { + var output = { + file: `${configs.pathOut}/${filename}${format === configs.default ? '' : `.${format}`}${minify ? '.min' : ''}.js`, + format: format, + banner: banner + }; + if (format === 'iife' || format === 'umd') { + output.name = configs.name ? configs.name : pkg.name; + } + if (minify) { + output.plugins = [terser()]; + } + return output; + }); +}; + +/** + * Create output formats + * @param {String} filename The filename + * @return {Array} The outputs array + */ +var createOutputs = function (filename) { + + // Create base outputs + var outputs = createOutput(filename); + + // If not minifying, return outputs + if (!configs.minify) return outputs; + + // Otherwise, ceate second set of outputs + var outputsMin = createOutput(filename, true); + + // Merge and return the two arrays + return outputs.concat(outputsMin); + +}; + +/** + * Create export object + * @return {Array} The export object + */ +var createExport = function (file) { + return configs.files.map(function (file) { + var filename = file.replace('.js', ''); + return { + input: `${configs.pathIn}/${file}`, + output: createOutputs(filename) + }; + }); +}; + +export default createExport(); \ No newline at end of file diff --git a/speed.html b/speed.html new file mode 100644 index 0000000..21c834a --- /dev/null +++ b/speed.html @@ -0,0 +1,69 @@ + + + + + + Smooth Scroll + + + + + + + + +
+ + + +
+

+ Click Me
+ Or me +

+ +

+ .
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+ +

Bazinga!

+ +

+ .
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+ +

Back to the top

+ +

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+
+
+ + + + + + + + \ No newline at end of file diff --git a/src/_closest.polyfill.js b/src/_closest.polyfill.js new file mode 100644 index 0000000..068e47a --- /dev/null +++ b/src/_closest.polyfill.js @@ -0,0 +1,16 @@ +/** + * closest() polyfill + * @link https://developer.mozilla.org/en-US/docs/Web/API/Element/closest#Polyfill + */ +if (window.Element && !Element.prototype.closest) { + Element.prototype.closest = function(s) { + var matches = (this.document || this.ownerDocument).querySelectorAll(s), + i, + el = this; + do { + i = matches.length; + while (--i >= 0 && matches.item(i) !== el) {} + } while ((i < 0) && (el = el.parentElement)); + return el; + }; +} diff --git a/src/_customEvent.polyfill.js b/src/_customEvent.polyfill.js new file mode 100644 index 0000000..4e7a110 --- /dev/null +++ b/src/_customEvent.polyfill.js @@ -0,0 +1,19 @@ +/** + * CustomEvent() polyfill + * https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/CustomEvent#Polyfill + */ +(function () { + + if (typeof window.CustomEvent === "function") return false; + + function CustomEvent(event, params) { + params = params || { bubbles: false, cancelable: false, detail: undefined }; + var evt = document.createEvent('CustomEvent'); + evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail); + return evt; + } + + CustomEvent.prototype = window.Event.prototype; + + window.CustomEvent = CustomEvent; +})(); \ No newline at end of file diff --git a/src/_requestAnimationFrame.polyfill.js b/src/_requestAnimationFrame.polyfill.js new file mode 100644 index 0000000..9b1bfee --- /dev/null +++ b/src/_requestAnimationFrame.polyfill.js @@ -0,0 +1,33 @@ +/** + * requestAnimationFrame() polyfill + * By Erik Möller. Fixes from Paul Irish and Tino Zijdel. + * @link http://paulirish.com/2011/requestanimationframe-for-smart-animating/ + * @link http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating + * @license MIT + */ +(function() { + var lastTime = 0; + var vendors = ['ms', 'moz', 'webkit', 'o']; + for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) { + window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame']; + window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] || + window[vendors[x]+'CancelRequestAnimationFrame']; + } + + if (!window.requestAnimationFrame) { + window.requestAnimationFrame = function(callback, element) { + var currTime = new Date().getTime(); + var timeToCall = Math.max(0, 16 - (currTime - lastTime)); + var id = window.setTimeout(function() { callback(currTime + timeToCall); }, + timeToCall); + lastTime = currTime + timeToCall; + return id; + }; + } + + if (!window.cancelAnimationFrame) { + window.cancelAnimationFrame = function(id) { + clearTimeout(id); + }; + } +}()); diff --git a/src/core.js b/src/core.js new file mode 100755 index 0000000..25abec6 --- /dev/null +++ b/src/core.js @@ -0,0 +1,622 @@ +// +// Default settings +// + +var defaults = { + + // Selectors + ignore: '[data-scroll-ignore]', + header: null, + topOnEmptyHash: true, + + // Speed & Duration + speed: 500, + speedAsDuration: false, + durationMax: null, + durationMin: null, + clip: true, + offset: 0, + + // Easing + easing: 'easeInOutCubic', + customEasing: null, + + // History + updateURL: true, + popstate: true, + + // Custom Events + emitEvents: true + +}; + + +// +// Utility Methods +// + +/** + * Check if browser supports required methods + * @return {Boolean} Returns true if all required methods are supported + */ +var supports = function () { + return ( + 'querySelector' in document && + 'addEventListener' in window && + 'requestAnimationFrame' in window && + 'closest' in window.Element.prototype + ); +}; + +/** + * Merge two or more objects together. + * @param {Object} objects The objects to merge together + * @returns {Object} Merged values of defaults and options + */ +var extend = function () { + var merged = {}; + Array.prototype.forEach.call(arguments, function (obj) { + for (var key in obj) { + if (!obj.hasOwnProperty(key)) return; + merged[key] = obj[key]; + } + }); + return merged; +}; + +/** + * Check to see if user prefers reduced motion + * @param {Object} settings Script settings + */ +var reduceMotion = function () { + if ('matchMedia' in window && window.matchMedia('(prefers-reduced-motion)').matches) { + return true; + } + return false; +}; + +/** + * Get the height of an element. + * @param {Node} elem The element to get the height of + * @return {Number} The element's height in pixels + */ +var getHeight = function (elem) { + return parseInt(window.getComputedStyle(elem).height, 10); +}; + +/** + * Escape special characters for use with querySelector + * @author Mathias Bynens + * @link https://github.com/mathiasbynens/CSS.escape + * @param {String} id The anchor ID to escape + */ +var escapeCharacters = function (id) { + + // Remove leading hash + if (id.charAt(0) === '#') { + id = id.substr(1); + } + + var string = String(id); + var length = string.length; + var index = -1; + var codeUnit; + var result = ''; + var firstCodeUnit = string.charCodeAt(0); + while (++index < length) { + codeUnit = string.charCodeAt(index); + // Note: there’s no need to special-case astral symbols, surrogate + // pairs, or lone surrogates. + + // If the character is NULL (U+0000), then throw an + // `InvalidCharacterError` exception and terminate these steps. + if (codeUnit === 0x0000) { + throw new InvalidCharacterError( + 'Invalid character: the input contains U+0000.' + ); + } + + if ( + // If the character is in the range [\1-\1F] (U+0001 to U+001F) or is + // U+007F, […] + (codeUnit >= 0x0001 && codeUnit <= 0x001F) || codeUnit == 0x007F || + // If the character is the first character and is in the range [0-9] + // (U+0030 to U+0039), […] + (index === 0 && codeUnit >= 0x0030 && codeUnit <= 0x0039) || + // If the character is the second character and is in the range [0-9] + // (U+0030 to U+0039) and the first character is a `-` (U+002D), […] + ( + index === 1 && + codeUnit >= 0x0030 && codeUnit <= 0x0039 && + firstCodeUnit === 0x002D + ) + ) { + // http://dev.w3.org/csswg/cssom/#escape-a-character-as-code-point + result += '\\' + codeUnit.toString(16) + ' '; + continue; + } + + // If the character is not handled by one of the above rules and is + // greater than or equal to U+0080, is `-` (U+002D) or `_` (U+005F), or + // is in one of the ranges [0-9] (U+0030 to U+0039), [A-Z] (U+0041 to + // U+005A), or [a-z] (U+0061 to U+007A), […] + if ( + codeUnit >= 0x0080 || + codeUnit === 0x002D || + codeUnit === 0x005F || + codeUnit >= 0x0030 && codeUnit <= 0x0039 || + codeUnit >= 0x0041 && codeUnit <= 0x005A || + codeUnit >= 0x0061 && codeUnit <= 0x007A + ) { + // the character itself + result += string.charAt(index); + continue; + } + + // Otherwise, the escaped character. + // http://dev.w3.org/csswg/cssom/#escape-a-character + result += '\\' + string.charAt(index); + + } + + // Return sanitized hash + return '#' + result; + +}; + +/** + * Calculate the easing pattern + * @link https://gist.github.com/gre/1650294 + * @param {Object} settings Easing pattern + * @param {Number} time Time animation should take to complete + * @returns {Number} + */ +var easingPattern = function (settings, time) { + var pattern; + + // Default Easing Patterns + if (settings.easing === 'easeInQuad') pattern = time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutQuad') pattern = time * (2 - time); // decelerating to zero velocity + if (settings.easing === 'easeInOutQuad') pattern = time < 0.5 ? 2 * time * time : -1 + (4 - 2 * time) * time; // acceleration until halfway, then deceleration + if (settings.easing === 'easeInCubic') pattern = time * time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutCubic') pattern = (--time) * time * time + 1; // decelerating to zero velocity + if (settings.easing === 'easeInOutCubic') pattern = time < 0.5 ? 4 * time * time * time : (time - 1) * (2 * time - 2) * (2 * time - 2) + 1; // acceleration until halfway, then deceleration + if (settings.easing === 'easeInQuart') pattern = time * time * time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutQuart') pattern = 1 - (--time) * time * time * time; // decelerating to zero velocity + if (settings.easing === 'easeInOutQuart') pattern = time < 0.5 ? 8 * time * time * time * time : 1 - 8 * (--time) * time * time * time; // acceleration until halfway, then deceleration + if (settings.easing === 'easeInQuint') pattern = time * time * time * time * time; // accelerating from zero velocity + if (settings.easing === 'easeOutQuint') pattern = 1 + (--time) * time * time * time * time; // decelerating to zero velocity + if (settings.easing === 'easeInOutQuint') pattern = time < 0.5 ? 16 * time * time * time * time * time : 1 + 16 * (--time) * time * time * time * time; // acceleration until halfway, then deceleration + + // Custom Easing Patterns + if (!!settings.customEasing) pattern = settings.customEasing(time); + + return pattern || time; // no easing, no acceleration +}; + +/** + * Determine the document's height + * @returns {Number} + */ +var getDocumentHeight = function () { + return Math.max( + document.body.scrollHeight, document.documentElement.scrollHeight, + document.body.offsetHeight, document.documentElement.offsetHeight, + document.body.clientHeight, document.documentElement.clientHeight + ); +}; + +/** + * Calculate how far to scroll + * Clip support added by robjtede - https://github.com/cferdinandi/smooth-scroll/issues/405 + * @param {Element} anchor The anchor element to scroll to + * @param {Number} headerHeight Height of a fixed header, if any + * @param {Number} offset Number of pixels by which to offset scroll + * @param {Boolean} clip If true, adjust scroll distance to prevent abrupt stops near the bottom of the page + * @returns {Number} + */ +var getEndLocation = function (anchor, headerHeight, offset, clip) { + var location = 0; + if (anchor.offsetParent) { + do { + location += anchor.offsetTop; + anchor = anchor.offsetParent; + } while (anchor); + } + location = Math.max(location - headerHeight - offset, 0); + if (clip) { + location = Math.min(location, getDocumentHeight() - window.innerHeight); + } + return location; +}; + +/** + * Get the height of the fixed header + * @param {Node} header The header + * @return {Number} The height of the header + */ +var getHeaderHeight = function (header) { + return !header ? 0 : (getHeight(header) + header.offsetTop); +}; + +/** + * Calculate the speed to use for the animation + * @param {Number} distance The distance to travel + * @param {Object} settings The plugin settings + * @return {Number} How fast to animate + */ +var getSpeed = function (distance, settings) { + var speed = settings.speedAsDuration ? settings.speed : Math.abs(distance / 1000 * settings.speed); + if (settings.durationMax && speed > settings.durationMax) return settings.durationMax; + if (settings.durationMin && speed < settings.durationMin) return settings.durationMin; + return parseInt(speed, 10); +}; + +var setHistory = function (options) { + + // Make sure this should run + if (!history.replaceState || !options.updateURL || history.state) return; + + // Get the hash to use + var hash = window.location.hash; + hash = hash ? hash : ''; + + // Set a default history + history.replaceState( + { + smoothScroll: JSON.stringify(options), + anchor: hash ? hash : window.pageYOffset + }, + document.title, + hash ? hash : window.location.href + ); + +}; + +/** + * Update the URL + * @param {Node} anchor The anchor that was scrolled to + * @param {Boolean} isNum If true, anchor is a number + * @param {Object} options Settings for Smooth Scroll + */ +var updateURL = function (anchor, isNum, options) { + + // Bail if the anchor is a number + if (isNum) return; + + // Verify that pushState is supported and the updateURL option is enabled + if (!history.pushState || !options.updateURL) return; + + // Update URL + history.pushState( + { + smoothScroll: JSON.stringify(options), + anchor: anchor.id + }, + document.title, + anchor === document.documentElement ? '#top' : '#' + anchor.id + ); + +}; + +/** + * Bring the anchored element into focus + * @param {Node} anchor The anchor element + * @param {Number} endLocation The end location to scroll to + * @param {Boolean} isNum If true, scroll is to a position rather than an element + */ +var adjustFocus = function (anchor, endLocation, isNum) { + + // Is scrolling to top of page, blur + if (anchor === 0) { + document.body.focus(); + } + + // Don't run if scrolling to a number on the page + if (isNum) return; + + // Otherwise, bring anchor element into focus + anchor.focus(); + if (document.activeElement !== anchor) { + anchor.setAttribute('tabindex', '-1'); + anchor.focus(); + anchor.style.outline = 'none'; + } + window.scrollTo(0 , endLocation); + +}; + +/** + * Emit a custom event + * @param {String} type The event type + * @param {Object} options The settings object + * @param {Node} anchor The anchor element + * @param {Node} toggle The toggle element + */ +var emitEvent = function (type, options, anchor, toggle) { + if (!options.emitEvents || typeof window.CustomEvent !== 'function') return; + var event = new CustomEvent(type, { + bubbles: true, + detail: { + anchor: anchor, + toggle: toggle + } + }); + document.dispatchEvent(event); +}; + + +// +// SmoothScroll Constructor +// + +var SmoothScroll = function (selector, options) { + + // + // Variables + // + + var smoothScroll = {}; // Object for public APIs + var settings, anchor, toggle, fixedHeader, eventTimeout, animationInterval; + + + // + // Methods + // + + /** + * Cancel a scroll-in-progress + */ + smoothScroll.cancelScroll = function (noEvent) { + cancelAnimationFrame(animationInterval); + animationInterval = null; + if (noEvent) return; + emitEvent('scrollCancel', settings); + }; + + /** + * Start/stop the scrolling animation + * @param {Node|Number} anchor The element or position to scroll to + * @param {Element} toggle The element that toggled the scroll event + * @param {Object} options + */ + smoothScroll.animateScroll = function (anchor, toggle, options) { + + // Cancel any in progress scrolls + smoothScroll.cancelScroll(); + + // Local settings + var _settings = extend(settings || defaults, options || {}); // Merge user options with defaults + + // Selectors and variables + var isNum = Object.prototype.toString.call(anchor) === '[object Number]' ? true : false; + var anchorElem = isNum || !anchor.tagName ? null : anchor; + if (!isNum && !anchorElem) return; + var startLocation = window.pageYOffset; // Current location on the page + if (_settings.header && !fixedHeader) { + // Get the fixed header if not already set + fixedHeader = document.querySelector(_settings.header); + } + var headerHeight = getHeaderHeight(fixedHeader); + var endLocation = isNum ? anchor : getEndLocation(anchorElem, headerHeight, parseInt((typeof _settings.offset === 'function' ? _settings.offset(anchor, toggle) : _settings.offset), 10), _settings.clip); // Location to scroll to + var distance = endLocation - startLocation; // distance to travel + var documentHeight = getDocumentHeight(); + var timeLapsed = 0; + var speed = getSpeed(distance, _settings); + var start, percentage, position; + + /** + * Stop the scroll animation when it reaches its target (or the bottom/top of page) + * @param {Number} position Current position on the page + * @param {Number} endLocation Scroll to location + * @param {Number} animationInterval How much to scroll on this loop + */ + var stopAnimateScroll = function (position, endLocation) { + + // Get the current location + var currentLocation = window.pageYOffset; + + // Check if the end location has been reached yet (or we've hit the end of the document) + if (position == endLocation || currentLocation == endLocation || ((startLocation < endLocation && window.innerHeight + currentLocation) >= documentHeight)) { + + // Clear the animation timer + smoothScroll.cancelScroll(true); + + // Bring the anchored element into focus + adjustFocus(anchor, endLocation, isNum); + + // Emit a custom event + emitEvent('scrollStop', _settings, anchor, toggle); + + // Reset start + start = null; + animationInterval = null; + + return true; + + } + }; + + /** + * Loop scrolling animation + */ + var loopAnimateScroll = function (timestamp) { + if (!start) { start = timestamp; } + timeLapsed += timestamp - start; + percentage = speed === 0 ? 0 : (timeLapsed / speed); + percentage = (percentage > 1) ? 1 : percentage; + position = startLocation + (distance * easingPattern(_settings, percentage)); + window.scrollTo(0, Math.floor(position)); + if (!stopAnimateScroll(position, endLocation)) { + animationInterval = window.requestAnimationFrame(loopAnimateScroll); + start = timestamp; + } + }; + + /** + * Reset position to fix weird iOS bug + * @link https://github.com/cferdinandi/smooth-scroll/issues/45 + */ + if (window.pageYOffset === 0) { + window.scrollTo(0, 0); + } + + // Update the URL + updateURL(anchor, isNum, _settings); + + // If the user prefers reduced motion, jump to location + if (reduceMotion()) { + adjustFocus(anchor, Math.floor(endLocation), false); + return; + } + + // Emit a custom event + emitEvent('scrollStart', _settings, anchor, toggle); + + // Start scrolling animation + smoothScroll.cancelScroll(true); + window.requestAnimationFrame(loopAnimateScroll); + + }; + + /** + * If smooth scroll element clicked, animate scroll + */ + var clickHandler = function (event) { + + // Don't run if event was canceled but still bubbled up + // By @mgreter - https://github.com/cferdinandi/smooth-scroll/pull/462/ + if (event.defaultPrevented) return; + + // Don't run if right-click or command/control + click or shift + click + if (event.button !== 0 || event.metaKey || event.ctrlKey || event.shiftKey) return; + + // Check if event.target has closest() method + // By @totegi - https://github.com/cferdinandi/smooth-scroll/pull/401/ + if (!('closest' in event.target)) return; + + // Check if a smooth scroll link was clicked + toggle = event.target.closest(selector); + if (!toggle || toggle.tagName.toLowerCase() !== 'a' || event.target.closest(settings.ignore)) return; + + // Only run if link is an anchor and points to the current page + if (toggle.hostname !== window.location.hostname || toggle.pathname !== window.location.pathname || !/#/.test(toggle.href)) return; + + // Get an escaped version of the hash + var hash; + try { + hash = escapeCharacters(decodeURIComponent(toggle.hash)); + } catch(e) { + hash = escapeCharacters(toggle.hash); + } + + // Get the anchored element + var anchor; + if (hash === '#') { + if (!settings.topOnEmptyHash) return; + anchor = document.documentElement; + } else { + anchor = document.querySelector(hash); + } + anchor = !anchor && hash === '#top' ? document.documentElement : anchor; + + // If anchored element exists, scroll to it + if (!anchor) return; + event.preventDefault(); + setHistory(settings); + smoothScroll.animateScroll(anchor, toggle); + + }; + + /** + * Animate scroll on popstate events + */ + var popstateHandler = function () { + + // Stop if history.state doesn't exist (ex. if clicking on a broken anchor link). + // fixes `Cannot read property 'smoothScroll' of null` error getting thrown. + if (history.state === null) return; + + // Only run if state is a popstate record for this instantiation + if (!history.state.smoothScroll || history.state.smoothScroll !== JSON.stringify(settings)) return; + + // Get the anchor + var anchor = history.state.anchor; + if (typeof anchor === 'string' && anchor) { + anchor = document.querySelector(escapeCharacters(history.state.anchor)); + if (!anchor) return; + } + + // Animate scroll to anchor link + smoothScroll.animateScroll(anchor, null, {updateURL: false}); + + }; + + /** + * Destroy the current initialization. + */ + smoothScroll.destroy = function () { + + // If plugin isn't already initialized, stop + if (!settings) return; + + // Remove event listeners + document.removeEventListener('click', clickHandler, false); + window.removeEventListener('popstate', popstateHandler, false); + + // Cancel any scrolls-in-progress + smoothScroll.cancelScroll(); + + // Reset variables + settings = null; + anchor = null; + toggle = null; + fixedHeader = null; + eventTimeout = null; + animationInterval = null; + + }; + + /** + * Initialize Smooth Scroll + * @param {Object} options User settings + */ + var init = function () { + + // feature test + if (!supports()) throw 'Smooth Scroll: This browser does not support the required JavaScript methods and browser APIs.'; + + // Destroy any existing initializations + smoothScroll.destroy(); + + // Selectors and variables + settings = extend(defaults, options || {}); // Merge user options with defaults + fixedHeader = settings.header ? document.querySelector(settings.header) : null; // Get the fixed header + + // When a toggle is clicked, run the click handler + document.addEventListener('click', clickHandler, false); + + // If updateURL and popState are enabled, listen for pop events + if (settings.updateURL && settings.popstate) { + window.addEventListener('popstate', popstateHandler, false); + } + + }; + + + // + // Initialize plugin + // + + init(); + + + // + // Public APIs + // + + return smoothScroll; + +}; + +export default SmoothScroll; \ No newline at end of file diff --git a/src/docs/_templates/_footer.html b/src/docs/_templates/_footer.html deleted file mode 100644 index 81c0ea3..0000000 --- a/src/docs/_templates/_footer.html +++ /dev/null @@ -1,13 +0,0 @@ - - - - - - - - - - - \ No newline at end of file diff --git a/src/docs/_templates/_header.html b/src/docs/_templates/_header.html deleted file mode 100644 index 2bd0e5c..0000000 --- a/src/docs/_templates/_header.html +++ /dev/null @@ -1,30 +0,0 @@ - - - - - - Smooth Scroll - - - - - - - - -
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\ No newline at end of file diff --git a/src/js/smooth-scroll.js b/src/js/smooth-scroll.js deleted file mode 100755 index 9370083..0000000 --- a/src/js/smooth-scroll.js +++ /dev/null @@ -1,576 +0,0 @@ -(function (root, factory) { - if ( typeof define === 'function' && define.amd ) { - define([], factory(root)); - } else if ( typeof exports === 'object' ) { - module.exports = factory(root); - } else { - root.smoothScroll = factory(root); - } -})(typeof global !== 'undefined' ? global : this.window || this.global, function (root) { - - 'use strict'; - - // - // Variables - // - - var smoothScroll = {}; // Object for public APIs - var supports = 'querySelector' in document && 'addEventListener' in root; // Feature test - var settings, anchor, toggle, fixedHeader, headerHeight, eventTimeout, animationInterval; - - // Default settings - var defaults = { - selector: '[data-scroll]', - selectorHeader: null, - speed: 500, - easing: 'easeInOutCubic', - offset: 0, - callback: function () {} - }; - - - // - // Methods - // - - /** - * Merge two or more objects. Returns a new object. - * @private - * @param {Boolean} deep If true, do a deep (or recursive) merge [optional] - * @param {Object} objects The objects to merge together - * @returns {Object} Merged values of defaults and options - */ - var extend = function () { - - // Variables - var extended = {}; - var deep = false; - var i = 0; - var length = arguments.length; - - // Check if a deep merge - if ( Object.prototype.toString.call( arguments[0] ) === '[object Boolean]' ) { - deep = arguments[0]; - i++; - } - - // Merge the object into the extended object - var merge = function (obj) { - for ( var prop in obj ) { - if ( Object.prototype.hasOwnProperty.call( obj, prop ) ) { - // If deep merge and property is an object, merge properties - if ( deep && Object.prototype.toString.call(obj[prop]) === '[object Object]' ) { - extended[prop] = extend( true, extended[prop], obj[prop] ); - } else { - extended[prop] = obj[prop]; - } - } - } - }; - - // Loop through each object and conduct a merge - for ( ; i < length; i++ ) { - var obj = arguments[i]; - merge(obj); - } - - return extended; - - }; - - /** - * Get the height of an element. - * @private - * @param {Node} elem The element to get the height of - * @return {Number} The element's height in pixels - */ - var getHeight = function ( elem ) { - return Math.max( elem.scrollHeight, elem.offsetHeight, elem.clientHeight ); - }; - - /** - * Get the closest matching element up the DOM tree. - * @private - * @param {Element} elem Starting element - * @param {String} selector Selector to match against - * @return {Boolean|Element} Returns null if not match found - */ - var getClosest = function ( elem, selector ) { - - // Element.matches() polyfill - if (!Element.prototype.matches) { - Element.prototype.matches = - Element.prototype.matchesSelector || - Element.prototype.mozMatchesSelector || - Element.prototype.msMatchesSelector || - Element.prototype.oMatchesSelector || - Element.prototype.webkitMatchesSelector || - function(s) { - var matches = (this.document || this.ownerDocument).querySelectorAll(s), - i = matches.length; - while (--i >= 0 && matches.item(i) !== this) {} - return i > -1; - }; - } - - // Get closest match - for ( ; elem && elem !== document; elem = elem.parentNode ) { - if ( elem.matches( selector ) ) return elem; - } - - return null; - - }; - - /** - * Escape special characters for use with querySelector - * @private - * @param {String} id The anchor ID to escape - * @author Mathias Bynens - * @link https://github.com/mathiasbynens/CSS.escape - */ - var escapeCharacters = function ( id ) { - - // Remove leading hash - if ( id.charAt(0) === '#' ) { - id = id.substr(1); - } - - var string = String(id); - var length = string.length; - var index = -1; - var codeUnit; - var result = ''; - var firstCodeUnit = string.charCodeAt(0); - while (++index < length) { - codeUnit = string.charCodeAt(index); - // Note: there’s no need to special-case astral symbols, surrogate - // pairs, or lone surrogates. - - // If the character is NULL (U+0000), then throw an - // `InvalidCharacterError` exception and terminate these steps. - if (codeUnit === 0x0000) { - throw new InvalidCharacterError( - 'Invalid character: the input contains U+0000.' - ); - } - - if ( - // If the character is in the range [\1-\1F] (U+0001 to U+001F) or is - // U+007F, […] - (codeUnit >= 0x0001 && codeUnit <= 0x001F) || codeUnit == 0x007F || - // If the character is the first character and is in the range [0-9] - // (U+0030 to U+0039), […] - (index === 0 && codeUnit >= 0x0030 && codeUnit <= 0x0039) || - // If the character is the second character and is in the range [0-9] - // (U+0030 to U+0039) and the first character is a `-` (U+002D), […] - ( - index === 1 && - codeUnit >= 0x0030 && codeUnit <= 0x0039 && - firstCodeUnit === 0x002D - ) - ) { - // http://dev.w3.org/csswg/cssom/#escape-a-character-as-code-point - result += '\\' + codeUnit.toString(16) + ' '; - continue; - } - - // If the character is not handled by one of the above rules and is - // greater than or equal to U+0080, is `-` (U+002D) or `_` (U+005F), or - // is in one of the ranges [0-9] (U+0030 to U+0039), [A-Z] (U+0041 to - // U+005A), or [a-z] (U+0061 to U+007A), […] - if ( - codeUnit >= 0x0080 || - codeUnit === 0x002D || - codeUnit === 0x005F || - codeUnit >= 0x0030 && codeUnit <= 0x0039 || - codeUnit >= 0x0041 && codeUnit <= 0x005A || - codeUnit >= 0x0061 && codeUnit <= 0x007A - ) { - // the character itself - result += string.charAt(index); - continue; - } - - // Otherwise, the escaped character. - // http://dev.w3.org/csswg/cssom/#escape-a-character - result += '\\' + string.charAt(index); - - } - - return '#' + result; - - }; - - /** - * Calculate the easing pattern - * @private - * @link https://gist.github.com/gre/1650294 - * @param {String} type Easing pattern - * @param {Number} time Time animation should take to complete - * @returns {Number} - */ - var easingPattern = function ( type, time ) { - var pattern; - if ( type === 'easeInQuad' ) pattern = time * time; // accelerating from zero velocity - if ( type === 'easeOutQuad' ) pattern = time * (2 - time); // decelerating to zero velocity - if ( type === 'easeInOutQuad' ) pattern = time < 0.5 ? 2 * time * time : -1 + (4 - 2 * time) * time; // acceleration until halfway, then deceleration - if ( type === 'easeInCubic' ) pattern = time * time * time; // accelerating from zero velocity - if ( type === 'easeOutCubic' ) pattern = (--time) * time * time + 1; // decelerating to zero velocity - if ( type === 'easeInOutCubic' ) pattern = time < 0.5 ? 4 * time * time * time : (time - 1) * (2 * time - 2) * (2 * time - 2) + 1; // acceleration until halfway, then deceleration - if ( type === 'easeInQuart' ) pattern = time * time * time * time; // accelerating from zero velocity - if ( type === 'easeOutQuart' ) pattern = 1 - (--time) * time * time * time; // decelerating to zero velocity - if ( type === 'easeInOutQuart' ) pattern = time < 0.5 ? 8 * time * time * time * time : 1 - 8 * (--time) * time * time * time; // acceleration until halfway, then deceleration - if ( type === 'easeInQuint' ) pattern = time * time * time * time * time; // accelerating from zero velocity - if ( type === 'easeOutQuint' ) pattern = 1 + (--time) * time * time * time * time; // decelerating to zero velocity - if ( type === 'easeInOutQuint' ) pattern = time < 0.5 ? 16 * time * time * time * time * time : 1 + 16 * (--time) * time * time * time * time; // acceleration until halfway, then deceleration - return pattern || time; // no easing, no acceleration - }; - - /** - * Calculate how far to scroll - * @private - * @param {Element} anchor The anchor element to scroll to - * @param {Number} headerHeight Height of a fixed header, if any - * @param {Number} offset Number of pixels by which to offset scroll - * @returns {Number} - */ - var getEndLocation = function ( anchor, headerHeight, offset ) { - var location = 0; - if (anchor.offsetParent) { - do { - location += anchor.offsetTop; - anchor = anchor.offsetParent; - } while (anchor); - } - location = Math.max(location - headerHeight - offset, 0); - return Math.min(location, getDocumentHeight() - getViewportHeight()); - }; - - /** - * Determine the viewport's height - * @private - * @returns {Number} - */ - var getViewportHeight = function() { - return Math.max( document.documentElement.clientHeight, root.innerHeight || 0 ); - }; - - /** - * Determine the document's height - * @private - * @returns {Number} - */ - var getDocumentHeight = function () { - return Math.max( - document.body.scrollHeight, document.documentElement.scrollHeight, - document.body.offsetHeight, document.documentElement.offsetHeight, - document.body.clientHeight, document.documentElement.clientHeight - ); - }; - - /** - * Convert data-options attribute into an object of key/value pairs - * @private - * @param {String} options Link-specific options as a data attribute string - * @returns {Object} - */ - var getDataOptions = function ( options ) { - return !options || !(typeof JSON === 'object' && typeof JSON.parse === 'function') ? {} : JSON.parse( options ); - }; - - /** - * Get the height of the fixed header - * @private - * @param {Node} header The header - * @return {Number} The height of the header - */ - var getHeaderHeight = function ( header ) { - return !header ? 0 : ( getHeight( header ) + header.offsetTop ); - }; - - /** - * Bring the anchored element into focus - * @private - */ - var adjustFocus = function ( anchor, endLocation, isNum ) { - - // Don't run if scrolling to a number on the page - if ( isNum ) return; - - // Otherwise, bring anchor element into focus - anchor.focus(); - if ( document.activeElement.id !== anchor.id ) { - anchor.setAttribute( 'tabindex', '-1' ); - anchor.focus(); - anchor.style.outline = 'none'; - } - root.scrollTo( 0 , endLocation ); - - }; - - /** - * Start/stop the scrolling animation - * @public - * @param {Node|Number} anchor The element or position to scroll to - * @param {Element} toggle The element that toggled the scroll event - * @param {Object} options - */ - smoothScroll.animateScroll = function ( anchor, toggle, options ) { - - // Options and overrides - var overrides = getDataOptions( toggle ? toggle.getAttribute('data-options') : null ); - var animateSettings = extend( settings || defaults, options || {}, overrides ); // Merge user options with defaults - - // Selectors and variables - var isNum = Object.prototype.toString.call( anchor ) === '[object Number]' ? true : false; - var anchorElem = isNum || !anchor.tagName ? null : anchor; - if ( !isNum && !anchorElem ) return; - var startLocation = root.pageYOffset; // Current location on the page - if ( animateSettings.selectorHeader && !fixedHeader ) { - // Get the fixed header if not already set - fixedHeader = document.querySelector( animateSettings.selectorHeader ); - } - if ( !headerHeight ) { - // Get the height of a fixed header if one exists and not already set - headerHeight = getHeaderHeight( fixedHeader ); - } - var endLocation = isNum ? anchor : getEndLocation( anchorElem, headerHeight, parseInt(animateSettings.offset, 10) ); // Location to scroll to - var distance = endLocation - startLocation; // distance to travel - var documentHeight = getDocumentHeight(); - var timeLapsed = 0; - var percentage, position; - - /** - * Stop the scroll animation when it reaches its target (or the bottom/top of page) - * @private - * @param {Number} position Current position on the page - * @param {Number} endLocation Scroll to location - * @param {Number} animationInterval How much to scroll on this loop - */ - var stopAnimateScroll = function ( position, endLocation, animationInterval ) { - var currentLocation = root.pageYOffset; - if ( position == endLocation || currentLocation == endLocation || ( (root.innerHeight + currentLocation) >= documentHeight ) ) { - - // Clear the animation timer - clearInterval(animationInterval); - - // Bring the anchored element into focus - adjustFocus( anchor, endLocation, isNum ); - - // Run callback after animation complete - animateSettings.callback( anchor, toggle ); - - } - }; - - /** - * Loop scrolling animation - * @private - */ - var loopAnimateScroll = function () { - timeLapsed += 16; - percentage = ( timeLapsed / parseInt(animateSettings.speed, 10) ); - percentage = ( percentage > 1 ) ? 1 : percentage; - position = startLocation + ( distance * easingPattern(animateSettings.easing, percentage) ); - root.scrollTo( 0, Math.floor(position) ); - stopAnimateScroll(position, endLocation, animationInterval); - }; - - /** - * Set interval timer - * @private - */ - var startAnimateScroll = function () { - clearInterval(animationInterval); - animationInterval = setInterval(loopAnimateScroll, 16); - }; - - /** - * Reset position to fix weird iOS bug - * @link https://github.com/cferdinandi/smooth-scroll/issues/45 - */ - if ( root.pageYOffset === 0 ) { - root.scrollTo( 0, 0 ); - } - - // Start scrolling animation - startAnimateScroll(); - - }; - - /** - * Handle has change event - * @private - */ - var hashChangeHandler = function (event) { - - // Get hash from URL - // var hash = decodeURIComponent( escapeCharacters( root.location.hash ) ); - var hash; - try { - hash = escapeCharacters( decodeURIComponent( root.location.hash ) ); - } catch(e) { - hash = escapeCharacters( root.location.hash ); - } - - // Only run if there's an anchor element to scroll to - if ( !anchor ) return; - - // Reset the anchor element's ID - anchor.id = anchor.getAttribute( 'data-scroll-id' ); - - // Scroll to the anchored content - smoothScroll.animateScroll( anchor, toggle ); - - // Reset anchor and toggle - anchor = null; - toggle = null; - - }; - - /** - * If smooth scroll element clicked, animate scroll - * @private - */ - var clickHandler = function (event) { - - // Don't run if right-click or command/control + click - if ( event.button !== 0 || event.metaKey || event.ctrlKey ) return; - - // Check if a smooth scroll link was clicked - toggle = getClosest( event.target, settings.selector ); - if ( !toggle || toggle.tagName.toLowerCase() !== 'a' ) return; - - // Only run if link is an anchor and points to the current page - if ( toggle.hostname !== root.location.hostname || toggle.pathname !== root.location.pathname || !/#/.test(toggle.href) ) return; - - // Get the sanitized hash - // var hash = decodeURIComponent( escapeCharacters( toggle.hash ) ); - // console.log(hash); - var hash; - try { - hash = escapeCharacters( decodeURIComponent( toggle.hash ) ); - } catch(e) { - hash = escapeCharacters( toggle.hash ); - } - - // If the hash is empty, scroll to the top of the page - if ( hash === '#' ) { - - // Prevent default link behavior - event.preventDefault(); - - // Set the anchored element - anchor = document.body; - - // Save or create the ID as a data attribute and remove it (prevents scroll jump) - var id = anchor.id ? anchor.id : 'smooth-scroll-top'; - anchor.setAttribute( 'data-scroll-id', id ); - anchor.id = ''; - - // If no hash change event will happen, fire manually - // Otherwise, update the hash - if ( root.location.hash.substring(1) === id ) { - hashChangeHandler(); - } else { - root.location.hash = id; - } - - return; - - } - - // Get the anchored element - anchor = document.querySelector( hash ); - - // If anchored element exists, save the ID as a data attribute and remove it (prevents scroll jump) - if ( !anchor ) return; - anchor.setAttribute( 'data-scroll-id', anchor.id ); - anchor.id = ''; - - // If no hash change event will happen, fire manually - if ( toggle.hash === root.location.hash ) { - event.preventDefault(); - hashChangeHandler(); - } - - }; - - /** - * On window scroll and resize, only run events at a rate of 15fps for better performance - * @private - * @param {Function} eventTimeout Timeout function - * @param {Object} settings - */ - var resizeThrottler = function (event) { - if ( !eventTimeout ) { - eventTimeout = setTimeout(function() { - eventTimeout = null; // Reset timeout - headerHeight = getHeaderHeight( fixedHeader ); // Get the height of a fixed header if one exists - }, 66); - } - }; - - /** - * Destroy the current initialization. - * @public - */ - smoothScroll.destroy = function () { - - // If plugin isn't already initialized, stop - if ( !settings ) return; - - // Remove event listeners - document.removeEventListener( 'click', clickHandler, false ); - root.removeEventListener( 'resize', resizeThrottler, false ); - - // Reset varaibles - settings = null; - anchor = null; - toggle = null; - fixedHeader = null; - headerHeight = null; - eventTimeout = null; - animationInterval = null; - }; - - /** - * Initialize Smooth Scroll - * @public - * @param {Object} options User settings - */ - smoothScroll.init = function ( options ) { - - // feature test - if ( !supports ) return; - - // Destroy any existing initializations - smoothScroll.destroy(); - - // Selectors and variables - settings = extend( defaults, options || {} ); // Merge user options with defaults - fixedHeader = settings.selectorHeader ? document.querySelector( settings.selectorHeader ) : null; // Get the fixed header - headerHeight = getHeaderHeight( fixedHeader ); - - // When a toggle is clicked, run the click handler - document.addEventListener( 'click', clickHandler, false ); - - // Listen for hash changes - root.addEventListener('hashchange', hashChangeHandler, false); - - // If window is resized and there's a fixed header, recalculate its size - if ( fixedHeader ) { - root.addEventListener( 'resize', resizeThrottler, false ); - } - - }; - - - // - // Public APIs - // - - return smoothScroll; - -}); \ No newline at end of file diff --git a/src/smooth-scroll.js b/src/smooth-scroll.js new file mode 100755 index 0000000..e444ec8 --- /dev/null +++ b/src/smooth-scroll.js @@ -0,0 +1,3 @@ +import SmoothScroll from './core.js'; + +export default SmoothScroll; \ No newline at end of file diff --git a/src/smooth-scroll.polyfills.js b/src/smooth-scroll.polyfills.js new file mode 100755 index 0000000..da09ab8 --- /dev/null +++ b/src/smooth-scroll.polyfills.js @@ -0,0 +1,6 @@ +import './_closest.polyfill.js'; +import './_customEvent.polyfill.js'; +import './_requestAnimationFrame.polyfill.js'; +import SmoothScroll from './core.js'; + +export default SmoothScroll; \ No newline at end of file