A simple script to animate scrolling to anchor links. Easing support contributed by Willem Liu with code from Gaëtan Renaudeau.

Getting started with Smooth Scroll is really easy. View the online tutorial or dig through the index.html file.

• v3.2 (February 10, 2014)
  • Fixes iOS infinite loop and Chrome browser zoom bugs.
• v3.1 (February 4, 2014)
  • Reverted to Array.protype.foreach loops.
• v3.0 (January 28, 2014)
  • Switched to a data attribute for the toggle selector.
  • Added namespacing to IIFE.
  • Updated looping method and event listener.
• v2.19 (January 23, 2014)
  • Fix back button behavior in Chrome.
• v2.18 (January 23, 2014)
  • Update URL before animation.
  • Fix back button behavior in Firefox.
• v2.17 (January 17, 2014)
  • Fixed back button behavior when using data-url feature.
• v2.16 (January 16, 2014)
  • Updated variables for more accurate easing math when scrolling to top of page.
• v2.15 (January 16, 2014)
  • Fixed bug that caused "scroll-to-top" animation to create endless loop.
• v2.14 (January 15, 2014)
  • Fixed bug that caused animation to stop several pixels short.
• v2.12 (January 7, 2014)
  • Added fixed header support.
• v2.11 (January 4, 2014)
  • Change offsetHeight to scrollHeight to fix fixed/absolute positioning issues.
• v2.10 (December 31, 2013)
  • Added URL history support.
• v2.9 (December 9, 2013)
  • Added fixed for infinite loop when scrolling up.
• v2.8 (December 3, 2013)
  • Fixed false distance reading.
  • Added linear easing as fallback when easing pattern not recognized to prevent script from failing.
• v2.7 (November 25, 2013)
  • Converted naming conventions back to mathmatical roots (ex. easeInCubic) to remain consistent with development community language.
• v2.6 (November 26, 2013)
  • Missing character was causing certain easing functions to break.
• v2.5 (November 22, 2013)
  • Changed the default easing to easeInOutNormal.
• v2.4 (November 21, 2013)
  • Added easing support with contributions from Willem Liu and code from Gaëtan Renaudeau.
• v2.3 (August 27, 2013)
  • Added missing semicolons.
  • Defined animationStop variable once, add values later.
  • Activated strict mode.
  • Wrapped in IIFE.
• v2.2 (August 17, 2013)
  • Now you can set the animation speed with the data-speed attribute. (ex. data-speed="400")
• v2.1 (August 17, 2013)
  • Improvement animation function interval for smoother animation.
  • Updated to allow for scrolling up the page.
• v2.0 (August 14, 2013)
  • Converted to vanilla JavaScript.
  • Removed dependency on jQuery.
• v1.1 (June 7, 2013)
  • Switched to MIT license.
• v1.1 (May 18, 2013)
  • Added jQuery noConflict mode.
  • Updated tutorial.
• v1.0 (January 24, 2013)
  • Initial release.

Smooth Scroll is free to use under the MIT License.