Opening a new tab/window, either by hyperlinks (i.e <a> tag with target attribute set to _blank) or programmatically calling window.open, will grant the newly-opened tab/window access back to the originating tab/window via window.opener. The...

clientWidth: gives you the size of the space inside the element, ignoring border width.

ES6 introcues a new type called symbol. The Symbol function returns a value of type symbol.

Recursion, simply put, is calling a function on itself. It can used to break down complex problems into smaller manageable similar units that can be handled by the same function.

If the seperator is a regular expression that contains capturing groups, the capturing groups will appear in the result as well.

Functions are first-class citizen in JavaScript, as the same as other types(e.g. number, array, object). They can be used as arguments, as well as return value from other function.

JavaScript has a concurrency model based on event loop. Each message is processed completely before any other message is processed. This offers some nice properties when reasoning about your program, including the fact that whenever a function run...

I complete reading JavaScript Enlightenment recently. The book is more about basics in JavaScript and suitable for beginners. Here are a list of my benefits and extensions from the book.

When we want to insert a script into a web page, the standard way is to use the script tag(i.e. <script>). The first impression that comes to people's mind about script tag is - BLOCKING . The book High Performance Web Sites Rule 6 suggests ...

Recently I have been reading the book Async Javascript about JS asynchronicity and JS event is one of the useful solutions to the problem. To get a deeper understanding of how events work, I create a custom EventEmitter which constains most of the...