jQuery 发布了 1.6.3 的第一个 RC 版本，下载地址：

• jQuery 1.6.3 RC1 Minified
• jQuery 1.6.3 RC1 Uncompressed

该版本详细改进记录：

Ajax

• #9255: jQuery.parseXML error handling does not work in webkit browsers
• #9854: Pass statusText through instead of “normalizing” it
• #9887: jQuery.ajaxSetup may cause unnecessary memory usage
• #9970: Typo in ajax.js: status should be jqXHR.status?
• #10098: Encode comment-like Accept headers to avoid mobile carrier mangling

Attributes

• #9630: foo.contents().hasClass() returns incorrect value
• #9699: removeAttr(‘style’) does not consistently remove the style attribute in webkit
• #9719: removeAttr(‘disabled’) doesn’t change input’s color on IE6
• #9979: .prop(‘tabIndex’) returns inconsistent results for elements that have not yet set tabIndex
• #9980: Simplify the attr code by using getAttributeNode for everything in IE6/7

Build

• #9988: Minimal License Header in compressed jQuery

Core

• #9521: XSS with $(location.hash) and $(#) is needed?
• #9897: try-catch isPlainObject detection
• #10076: $.inArray crashes IE6 and Chrome if second argument is `null` or `undefined`

CSS

• #6652: Remove filter:alpha(opacity=100) after animation
• #9572: Support -ms-transform in .css() method
• #10021: Can’t add negative numbers using the relative-value syntax with .css() and .animate()

Data

• #8235: jQuery.data throws a script error in certain circumstances
• #9318: HTML5 data attributes has strange behaviour with if attribute names contain numbers
• #9413: $.fn.removeData does not remove data with a dash in a name
• #9779: Allow non-null|undefined evaluation of data property values
• #9794: jQuery.fn.data() correctly handle access to arbitrary data property values
• #10016: Cannot retrieve “false-y” values under key names with dashes using jQuery.data method
• #10080: unload from frame’s window breaks in IE8

Dimensions

• #10123: .width() can return a float in Firefox 6

Effects

• #9381: Animations halt when the browser is out of focus due to requestAnimationFrame
• #9678: setInterval cleared by animation

Event

• #7071: Accessing the ‘type’ property on VML elements fails on IE during submit special handler

Manipulation

• #9587: Cloning a div with an object causes error in IE8

Support

• #9634: Visible “t” character in upper left corner during support.js init
• #9823: IE 8 crashes when using background-image on BODY in css
• #9964: test/support.js module strictEqual typo
• #10029: $.support.scriptEval removed, but still included in documentation