Why jQuery?

There are many libraries and frameworks available for JavaScript, including MooTools, Ext, Dojo, and Prototype. So, why use jQuery and not others? Here are some of the reasons:

• jQuery has a huge number of plugins available for everything you could imagine wanting to do online

• The information on the jQuery site is extremely well documented, with many examples

• jQuery does not extend the elements that it works on, which means that JavaScript such as 'for(i in el){...}' will still work

• jQuery's CSS selector engine, Sizzle, is arguably the most complete and the quickest available