jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. jQuery is designed to change the way that you write JavaScript.
About 15KB in size (Minified and Gzipped)
Supports CSS 1-3 and basic XPath
IE 6.0+, FF 2+, Safari 2.0+, Opera 9.0+
What does jQuery code look like? Here's the quick and dirty:
$("p.neat").addClass("ohmy").show("slow");
Run Code
Congratulations! You just ran a snippet of jQuery code. Wasn't that easy? There's lots of example code throughout the documentation on this site. Be sure to give all the code a test run, to see what happens.