jQuery 1.11.1 和 2.1.1 发布，这是小的分支版本发布，没有任何关键的兼容性问题。 1.x 分支支持 IE 6/7/8 ，2.x 分支不支持。
下载地址：
http://code.jquery.com/jquery-1.11.1.js
http://code.jquery.com/jquery-2.1.1.js
其他下载：
http://code.jquery.com/jquery-1.11.1.min.js
http://code.jquery.com/jquery-1.11.1.min.map
http://code.jquery.com/jquery-2.1.1.min.js
http://code.jquery.com/jquery-2.1.1.min.map
jQuery 1.11.1 和 2.1.1 普遍的改进记录
Ajax
#14773: load() with selector doesn’t work
Attributes
#14858: jQuery 1.11.0 and up - .val() of option with no value attribute returning white-space
Build
#14798: Define bower.json#main for all tags
#14859: Custom Build: custom AMD name doesn’t work
#14917: 1.8.3+1 missing jquery.js
#15020: npm install from git master fails
Core
#14179: $.isNumeric returns true if argument is an array that contains one integer
#14687: note on AMD best practices
#14785: Broken again when transforming XHTML to XHTML (creating XML-DOM) via clientside XSLT
#14802: User defined onready function on the window is triggered when jQuery is present on the page
#14882: document.ready doesn’t fire in iOS7 for jQuery loaded after window load event fires
Css
#14750: $.show() after $.hide() sometimes does not restore the correct display style
#14792: Inconsistent .css(‘font-weight’) return values
#14888: Add flexbox properties to jQuery.cssNumber to avoid adding “px”
#15016: Chrome 34 returns ‘auto’ via getComputedStyle when ‘widows’ property is set to 0
Data
#14894: IE11: exception when calling $.fn.data() on the body element when it has an ‘onpageshow’ attribute
Dimensions
#14979: Order of conditions causes unnecessary Reflow
Effects
#14824: jQuery v1.11 and v2.1 slideUp and slideDown not respecting css display property on non-block elements
Event
#13997: stopImmediatePropagation doesn’t stop DOM added event listeners
#14741: Improve compatibility with Pointer Events
#14791: Triggering beforeunload throws exception
Misc
#14818: Remove integration tests for Sizzle
jQuery 2.1.1 的改进记录
Ajax
#14683: ajax: Exceptions thrown synchronously by xhr.send are not caught
Attributes
#14756: Simplify an option hook
Core
#14746: Remove special case try/catch in isPlainObject
#14794: String.prototype.trim doesn’t trim Unicode whitespaces in Android <4.1
Css
#14836: Css -webkit-transistion, transition not set under Chrome
Event
#14897: Android 2.3 doesn’t pass isDefaultPrevented value to bubbled events
Manipulation
#14659: Avoid use of Object.keys() in cleanData()
Selector
#14902: Use element.matches in alternate selector engine if it’s available
Support
#14901: “Unsafe HTML” warnings in WWA
jQuery 1.11.1 的改进记录
Css
#14731: Checking .css(‘marginRight’) after width() can give incorrect results
#14759: IE8 element.css({ font: ‘bold 11px/14px Lucida Grande’ }) doesn’t work
来自:开源中国社区
