Plugins
There are a great number of really impressively good JavaScript libraries in the wild. For me, the library that changed how I look at JavaScript was jQuery. For others, it may have been one of the other popular libraries such as MooTools, Dojo, Prototype, or YUI. However, jQuery has exploded in popularity and has, at the time of writing, won the JavaScript library wars. 78.5 percent of the top 10,000 websites by traffic on the Internet make use of some version of jQuery. None of the rest of the libraries even break 1 percent.
Many developers have seen fit to implement their own libraries on top of these foundational libraries in the form of plugins. A plugin typically modifies the prototype exposed by the library and adds additional functionality. ...
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