jQuery 是一个JavaScript 库，它有助于简化 JavaScript™ 以及 Asynchronous JavaScript + XML (Ajax) 编程。与类似的 JavaScript 库不同，jQuery 具有独特的基本原理，可以简洁地表示常见的复杂代码。学习 jQuery 基本原理，探索其特性和功能，执行一些常见的 Ajax 任务并掌握如何使用插件扩展 jQuery。jQuery 1.3.2:

• jQuery Minified (19kb with Gzipping)
• jQuery Regular (120kb)

svn:http://dev.jquery.com/browser/trunk/jquery

ChangeLog:
 The selector engine now returns elements in document order rather than the order in which the selectors were passed in. It's now possible to call "event.stopPropagation()" or "return false" within a .live() callback and have it stop the bubbling of the live event. The logic behind the :visible and :hidden selectors and the .height(), .width(), .innerHeight(), .innerWidth(), .outerHeight(), and .outerWidth() methods was overhauled. The methods appendTo, prependTo, insertBefore, insertAfter, and replaceAll all now return the set of inserted elements, instead of the original set of elements.