【IT168 技术】Jquery是继prototype之后又一个优秀的Javascrīpt框架。它是轻量级的js库(压缩后只有21k) ，它兼容CSS3，还兼容各种浏览器(IE 6.0+, FF 1.5+, Safari 2.0+, Opera 9.0+)。jQuery使用户能更方便地处理HTML documents、events、实现动画效果，并且方便地为网站提供AJAX交互。jQuery还有一个比较大的优势是，它的文档说明很全，而且各种应用也说得很详细，同时还有许多成熟的插件可供选择。jQuery能够使用户的html页保持代码和html内容分离，也就是说，不用再在html里面插入一堆js来调用命令了，只需定义id即可。

　　jQuery 1.7.1 正式版发布了，新增功能如下：

　　Ajax

　　#10723: jqXHR.always()返回的不再是jqXHR对象。

　　Attributes

　　#10724: $(document).text()返回空字符串。

　　#10773: removeAttr is fragile for edge cases

　　Build

　　#10630: Fix focus-related test failures to resolve Swarm failures

　　Core

　　#10616: Type coersion not done for -1 in .eq

　　#10646: jQuery.error抛出错误对象的实例。

　　#10682: Creating DOM elements with $(‘ ‘) leaks memory and skips the fragment cache

　　#10687: jQuery calls the AMD define() global function too early

　　#10690: isNumeric

　　Css

　　#10733:在CSS模块中移除了jQuery.each的使用

　　Data

　　#10675: 不再使用jQuery.expando,使用内部的快捷键。

　　Effects

　　#10669: .animate() no longer animates percentage(%) width

　　#10750: A “null” in the data object can cause an error in stop

　　Event

　　#10676: wheelDelta not added to mousewheel event anymore

　　#10701: Problems with submit forms using submit function

　　#10704: special.handle method should fire under origType name

　　#10705: off bug event name parser

　　#10712: Triggering blur with live bind broken

　　#10717: A triggered load bubbles up to window

　　#10791: Delegated Events fail on SVG elements

　　#10794: .triggerHandler should not .preventDefault()

　　#10798: live(“submit”) and .submit() would cause unobtrusive ajax live to fire twice

　　#10844: .delegate() on submit doesn’t work when form contains input with name “id”

　　Manipulation

　　#10177: index of callback function in .wrap is always 0

　　#10667: HTML5 Support in .wrapAll() does add a “:” to element

　　#10670: rnoshimcache probably not constructed correctly

　　#10812: passing empty object to .before() or .after() throws exception in IE7

　　Misc

　　#10691: remove all occurrences of the “equals” and “same” function in the unit tests`

　　Support

　　#10629: IE is much too sensitive concerning the fake body. Explore cleaning up support.js to avoid any future crashes.

　　#10807: Non-ascii apostrophe in comment

      下载地址：http://code.jquery.com/jquery-1.7.1.min.js
                          http://code.jquery.com/jquery-1.7.1.js