You’ve been good boys and girls this year, so look what Santa left under the source tree: jQuery 1.9 Beta 1! We’ve made a lot of changes this time, so we need your help in testing more than ever. Please don’t leave us feeling awkward at the holiday party with that punch bowl full of warm eggnog and the creepy guy from accounting. Just take a few minutes out of your holiday schedule and try this with your code. It’s a gift we will definitely appreciate.

jQuery 1.9 has removed many of the items we deprecated during the last few versions of jQuery. For that reason, we’re introducing the jQuery Migrate plugin. This plugin restores several of the deprecated and removed features so that existing code can run, without changing the code. However, it’s intended as a short-term stopgap and shouldn’t be used for new work. To make migration easier, the development version (linked below) also provides browser console warnings to let you know which obsolete features the code is still using. See the plugin documentation for a list of messages you may see.

To test, we recommend that you start with the jQuery Migrate plugin since it will warn you about any deprecated features the code may depend on. Just include these two script tags in your code, replacing your existing jQuery script include:

<script src="http://code.jquery.com/jquery-1.9.0b1.js"></script>
<script src="http://code.jquery.com/jquery-migrate-1.0.0b1.js"></script>


Be sure to update to the most recent versions of jQuery UI and jQuery Mobile if you are also using them.

If the browser’s console does not show any “JQMIGRATE” warning messages generated by the jQuery Migrate plugin, try removing the jquery-migrate include and try jQuery 1.9 in all its squeaky-clean glory. If you have questions, feedback, or complaints about the beta that aren’t specifically bugs, let us know in the jQuery Forum.

Issues regarding the migration plugin not discussed below or in the upgrade guide can be reported at the jQuery Migrate Issue tracker; include a test case that we can use to diagnose the problem. The best way to do that is create a simple test at jsFiddle.net or jsbin.com. You can this jsFiddle tempate or jsbin template as a starting point; they already contain links to the work-in-progress versions of both jQuery and the jQuery Migrate plugin. Add your code there and post a link to it with your bug report.

If you’re seeing problems after fixing any migration issues, removing jQuery Migrate, and using the 1.9 beta by itself, you can report them at the main jQuery core bug tracker. A test case is essential here as well so that we can analyze the problem. Again, if you have questions, feedback, or complaints about the beta that aren’t specifically bug reports, use the jQuery Forum.

What’s New

The majority of work in 1.9 has revolved around API cleanup. Changes most likely to affect existing code are listed in the jQuery 1.9 Upgrade Guide, and these changes will also carry over to 2.0. The jQuery Migrate plugin will identify many of these issues for you automatically, so it’s good to use the plugin in your initial testing to see if it identifies anything that needs to be changed.

We couldn’t let a version like this escape without adding at least one new feature; it’s a good one.

$(element).css([ name1, name2 … ]): This is a new getter that retrieves multiple CSS properties for the first element in a collection and returns them as an object with properties. In addition to the shorter code, this signature provides up to 25 percent better performance because it can use the same return value from the browser’s `.getComputedStyle()` method rather calling the method for each css property. Typical use might be like this:

var dims = $("#box").css([ "width", "height", "backgroundColor" ]);
//  { width: "10px", height: "20px", backgroundColor: "#D00DAD" }

Finally, no major version would be complete without fixes for a variety of bugs and peculiar edge cases that you’ve discovered and reported on the bug tracker. Those, along with all the other modifications, are all cataloged in the changelog below.

How It’s Made

Possibly the most exciting news of this beta is that so many contributors — new and veteran — worked to make jQuery better. Our first jQuery Developer Summit in October brought in some incredibly skilled developers that we hope will continue to stay with us, and several new contributors dared to tackle bugs that have been open for more than a year! If you’re interested, you can help out too.

Let’s give a round of applause to the people who contributed their code gifts to this 1.9 beta: Akintayo Akinwunmi, Alexander Farkas, Allen J Schmidt Jr, Ben Truyman, Bennett Sorbo, Callum Macrae, Carl Danley, Corey Frang, Daniel Gálvez, Dan Morgan, David Bonner, David Fox, Devin Cooper, Elijah Manor, Erick Ruiz de Chavez, Greg Lavallee, Ismail Khair, James Huston, Jay Merrifield, Jonathan Sampson, Julian Aubourg, Marcel Greter, Matt Farmer, Matthias Jäggli, Mike Petrovich, Mike Sherov, Oleg Gaidarenko, Paul Ramos, Richard Gibson, Rick Waldron, Rod Vagg, Roland Eckl, Sai Wong, Scott González, Timmy Willison, Timo Tijhof, Tom Fuertes, and Yi Ming He. If you happen to see them under the mistletoe … well, you know what to do.

jQuery 1.9 Beta 1 Change Log

Ajax

• #12004: Rename ajax.type to ajax.method
• #12550: jQuery Ajax cache=false doesn't always work

Attributes

• #10299: hrefNormalized === false also needs a propHook
• #12048: [IE6/7/8] xml set attribute
• #12584: jQuery wrongly serializes select with one disabled option
• #12600: jQuery('select').is('[value="value"]') works inconsistently depending on number of elements returned
• #13011: Setting type attribute on an input doesn't work as intended

Build

• #12254: Reflected XSS
• #12490: Move submodule update process to grunt
• #12725: Avoid localized UTF-8 characters in intro.js @DATE
• #13044: Execute all QUnit modules in TestSwarm
• #13064: Improve test suite fixture cleanup

Core

• #9469: Remove semi-functional .selector calculation from .pushStack()
• #9904: Move deprecated functionality to compatibility plugin
• #10417: jQuery.later
• #11290: selector interpreted as HTML
• #11737: Remove jQuery.sub
• #12107: Change proxy to allow arguments currying without overwriting context
• #12134: implement HTML5 compilant form data construction into $.fn.serialzeArray
• #12191: jQuery.type() should return "error" for native ECMAScript Error objects
• #12519: Public API methods should not have private arguments
• #12840: Remove (private) parameter "pass" from jQuery.attr and jQuery.access
• #13021: each() cannot work well with a literal object who has a length member

Css

• #11938: jQuery.css should accept an array to get multiple properties
• #12990: 'px' automatically added to column-count css property

Data

• #10544: Remove ALL special meanings of "." in keys for $.fn.data

Deferred

• #11405: deferred.notify() invokes progressCallbacks with deferred as context

Effects

• #12803: Smarter hook point for jQuery.timer

Event

• #3827: Checkbox state inconsistent in click event handler
• #12061: $(window).beforeunload() clobbers previous handler and return values
• #12518: Don't use offsetWidth in jQuery.event.trigger()
• #12610: jQuery.event.dispatch should remove window.event
• #12736: Move pseudo:hover to jquery-compat / deprecated.js
• #12739: Name: Passing in an Event to trigger strips namespace
• #12827: Remove "exclusive" events
• #12828: Remove event properties: attrChange attrName relatedNode srcElement

Manipulation

• #4087: insertAfter, insertBefore, etc do not work when destination is original element
• #9646: IE7: Cloning of form-elements and changing their names also changes the name of the elements that are cloned.
• #10470: wrap() evaluates scripts
• #11226: .after and .before returns incorrect data for $('not_existing_element')
• #11230: .appendTo .prependTo .insertAfter .insertBefore returns incorrect data for $('not_existing_element')
• #11280: appending elements to an object element fails in IE < 9
• #11795: Resolve script manipulation/execution inconsistencies
• #12120: Inconsistency of .end() with respect to .after()
• #12392: Elements created from HTML strings have a parentNode
• #12449: replaceWith() doesn't clone elements where required
• #12503: before/after will choke if collection has not first disconnected node
• #12777: Applets don't work when appended on IE
• #12957: Improve wrapMap
• #13013: Move jQuery.buildFragment() to compat plugin
• #13019: New pre-1.9 .replaceWith() behavior leaks data and events

Misc

• #12758: Make sure Summit new authors are credited

Offset

• #6446: Mobile Safari 4.0.4: $.offset.top() reports wrong position after scroll

Selector

• #11115: ".is()" and ".filter()" disagree on attribute selector "[checked]"
• #12856: Syntax error, unrecognized expression in jquery 1.8+

Support

• #12869: Support tests affect page layout in IE8/9/10 running in IE7 mode

Traversing

• #12009: jQueryObject.find(element) corrupts the stack
• #12816: .find can return elements in the wrong order

NOTE: Please do not report bugs or other problems via blog comments!

We’re pleased to announce that jQuery 1.8.2 is available! This version fixes several bugs and performance regressions reported from the past couple of releases, and we think the 1.8 line is pretty solid at this point. The only way to know for sure that it works with your code is to test it–so please do!

• http://code.jquery.com/jquery-1.8.2.min.js (compressed, for production)
• http://code.jquery.com/jquery-1.8.2.js (uncompressed, for debugging)

As always, we have put out the jQuery-shaped signal lights; the master control centers at the Google and Microsoft CDNs are on high alert and will soon post these files. For immediate relief, please use the copies above. If you find a problem, please post a bug report and be sure to include a test case from jsfiddle.net or jsbin.com.

The complete change log for jQuery 1.8.2 is below. If this is your first upgrade to the 1.8 line, be sure to read the blog entries for 1.8.0 and 1.8.1 to see what’s changed.

Many thanks to the patch contributors for this version; ye shall know them by their GitHub handles: timmywil, gibson042, rwldrn, joyvuu-dave, jaubourg, staabm, and sindresorhus. In addition, we thank all the community members who took the time to contribute quality bug reports with test cases. Your initial groundwork makes it possible for us to find and fix bugs.

jQuery 1.8.2 Change Log

Deferred

• #12521: Deferred.promise( target) only works fine when typeof( target)=='object'

Event

• #12423: jQuery breaks with Comcast Protection Guard and any anti-keylogging protection software on IE7+
• #12436: Performance degradation with delegate events and pseudo-classes

Misc

• #12229: Some inconsistencies/optimizations

Offset

• #12534: .offset() throws an error on BlackBerry5 and iOS3
• #12536: Make .offset() calc less wrong on browsers w/o getBoundingClientRect

Selector

• #12303: Attribute selector fails if the attribute value contains :first :last
• #12337: :nth-child selector not accurate after new child element added
• #12361: seleter has bug
• #12448: :contains() edge case throwing an error
• #12492: In textarea focus event handler, $(this).is(':focus') == false in Chrome & Safari
• #12523: JQuery renders line breaks as text nodes
• #12526: :last selector fails to find a match
• #12541: 1.8.0 and 1.8.1: Double :not() selector fails in IE6/7
• #12572: :contains breaks searching iframes v1.8

Traversing

• #12474: Using find on a collection with append does not return the correct elements

It’s been a frantic but productive few weeks, and the jQuery core team is pleased to announce that jQuery 1.8.1 is released! This version fixes the issues reported by the community following the final release of 1.8.0. Here are the files, ready for you to use:

• http://code.jquery.com/jquery-1.8.1.min.js (production, compressed)
• http://code.jquery.com/jquery-1.8.1.js (development, uncompressed)

The Google and Microsoft CDNs will also have copies available soon.

The final set of bugs that were fixed are listed below. Don’t forget, folks, we love to hear about bugs in the betas and release candidates too! You don’t have to wait for a final release to test with your code. The earlier we can fix these bugs, the smoother things go for both the team and the jQuery community.

Use jQuery UI 1.8.23 and jQuery Mobile 1.1.1 or later for best compatibility with jQuery core 1.8.1.

Don’t use Quirks mode! jQuery has never supported Quirks mode and we do not perform any testing in Quirks. This can affect values like $("window").height(), and the jQuery 1.8 Quirks mode results did change in order to support some modern browser features. The majority of problem cases we’ve seen are from developers that wanted to be in Standards mode but had an invalid doctype or extraneous markup before their <html> tag. When in doubt, use the simple and short <!doctype html>.

Sizzle’s custom pseudo-selectors that take arguments have changed, but jQuery 1.8.1 provides a compatibility shim for older code. Neither Sizzle nor jQuery documented how these worked before; there is now official documentation for Sizzle. Look there for an example of best practice on writing custom pseudo-selectors that work with all versions of jQuery.

Many thanks to the team and community members who contributed patches for this release: Timmy Willison, Mike Sherov, Elijah Manor, Mike Pennisi, Richard Gibson, Corey Frang, Mathias Bynens, Oleg Gaidarenko, Nikita Govorov, Julian Aubourg, and Rick Waldron.

We’re also very appreciative to those of you who took the time to create good bug reports for jQuery 1.8.1. In the highly unlikely event we somehow managed to leave any bugs in this release, please do let us know. First check the bug tracker to see if it has already been reported. If not, create a test case using jsFiddle.net or jsbin.com with the least possible code that it takes to demonstrate the problem.

jQuery 1.8.1 Change Log

Ajax

• #12233: jQuery.post() raises "RangeError: Maximum call stack size exceeded"
• #12234: the .load() method,when params is null, the ajax type will be "POST", but not be "GET"

Core

• #12282: 1.8.0 regression – document ready is fired too early on IE 9/10
• #12329: event.js still has a reference to bindReady
• #12350: jQuery.trim should remove byte-order-mark (BOM) characters
• #12370: jquery android 2.1-update1 problem

Css

• #12235: getComputedStyle is used without namespace
• #12313: .height() and .width() no longer fall back to CSS if offsetWidth is undefined.
• #12324: cssNormalTransform can produce wrong values

Data

• #10863: .data method does not return an object if the JSON string contains newlines.

Dimensions

• #12283: jQuery 1.8 outerHeight is returning undefined instead of null

Effects

• #12273: animate fails with 0 duration

Event

• #12149: 'change' event handler leaks in IE7/8
• #12383: jQuery.on() selector should only apply to descendants of the element

Manipulation

• #12346: fn.append not working correctly
• #12384: .after fails with table rows in IE9

Queue

• #12278: .promise(type) not working for non-default queue

Selector

• #12205: Miscellaneous pseudo selector issues
• #12237: Having child selector and multiple :not with :visible does not work any more
• #12241: Passing a negative index for :eq throws a syntax error.
• #12285: Selector with :not(:first) isn't working since 1.8
• #12292: Invalid selectors can cause a subsequent valid selector not to work
• #12303: Attribute selector fails if the attribute value contains :first :last
• #12311: jQuery 1.8 and .is(":visible")
• #12314: $.contains fatal error in IE9 when 2nd parameter is null
• #12359: 1.8.0 creating invalid tag/attribute when loading the library
• #12369: ajax, use find method for read xml
• #12403: Selector "> li > :first-child,> :not(li):even" fails in old IE
• #12409: Back-compat issue with custom pseudo selectors
• #12412: Sizzle regression ":not([data-role='list-divider']):not(:hidden)"
• #12419: Composite selector fails if id attribute contains dot.

Support

• #12333: $.browser.webkit (undefined) -> $.browser.chrome

One of the great new features in jQuery 1.8 is a built-in understanding of box-sizing: border-box which is supported by every modern browser. (Sorry, IE6 and IE7, please take one step back; I said modern browser.)

If you showed people an element with a border on the screen and asked them the width of that element, they would naturally measure from the outside edges of the border. Yet that’s not the way CSS works in its default content-box mode. Normally, CSS width and height only include the “content” inside the border and padding. As a result, designers (and jQuery) often need to add the width to the right/left padding and border to get the “natural” width of the element.

Using box-sizing: border-box changes the CSS notion of the width of an element to include both the padding and the border dimensions, just the way you’d naturally measure it. jQuery versions before 1.8 were not fully trained in the ways of the border-box, but we’ve fixed this bug.

One thing that hasn’t changed is the return value of the .width() method. As it’s always been documented, it gets and/or sets the “content” width of an element, and that is regardless of the CSS box-sizing being used by the element. However, jQuery 1.8 now needs to check the box-sizing property whenever you use .width() so that it can decide whether it needs to subtract out the padding and border width. That can be expensive—up to 100 times more expensive on Chrome! Fortunately, most code doesn’t use .width() enough times for this to be noticeable, but code that gets the width of dozens of elements at once could be impacted.

There is a very easy way to avoid this performance penalty if it does impact your code. Simply use .css("width") instead of .width() to make it clear you want to get or set the actual width of the element as specified by the CSS. That doesn’t require jQuery to look at box-sizing. Remember, however, that .css("width") as a getter returns a string with “px” at the end, so you’ll want to use something like parseFloat( $(element).css("width") ) for situations where the result must be numeric.

And of course, everything mentioned here about .width() also applies to .height() as well; use .css("height") to skirt the performance penalty there.

Using .outerWidth() as a setter

In other dimensionally related news, jQuery’s .outerWidth() and .outerHeight() methods have been updated in 1.8 so that they can be used as setters. (jQuery UI has supported them as setters since UI version 1.8.4, but now it’s built into core.) To use .outerWidth() as a setter, pass an argument that is a number representing the outer width (CSS “content” width, plus padding and border width). And yes, this handles the box-sizing: border-box situation fine as well; it’s basically the same as setting the .css("width") in that case.

We’ve received a few reports from people who had problems with .outerWidth() in jQuery 1.8 because it was returning the jQuery object instead of a numeric width. This happens if you call $(element).outerWidth(0) for example. Before jQuery 1.8, this was an invalid use of the API because it was documented to accept a single Boolean argument. However, it treated the invalid argument as a Boolean and returned the width. In 1.8, jQuery uses the value 0 to set the width, and like most setters it returns the jQuery object.

We’re in the process of updating the API documentation for all the changes to 1.8, but for now you can refer back to the changelog in the jQuery 1.8 announcement to see what’s changed.

jQuery 1.8RC1 is here. Yep, RC as in Release Candidate. The good news is that this release is a few days later than I expected it to be. It’s good news because we received several valuable but last-minute bug reports we were able to fix. Many thanks to those of you who took the time to try out Beta 2 with your code, and especially to those who found and reported bugs.

Now I know there are a lot of you out there thinking, “Gee whiz, nobody ever lets me find bugs.” Well, here’s your chance to be a hero to the jQuery community. In this Release Candidate we may have taken some working features and inserted problems so obscure that even we don’t know where they are. Please find them! Just grab the code from here:

http://code.jquery.com/jquery-1.8rc1.js

Try out this Release Candidate code wherever you use jQuery, and let us know about any issues you find via the bug tracker. Be sure to mention you’re testing against jQuery 1.8 RC1, and please create a test case that shows the bug using jsFiddle.net so we can reproduce it and investigate. You can use the “jQuery (edge)” choice for framework in jsFiddle, which represents the most up-to-date code.

Oh, and did I mention this is a Release Candidate? Yeah, I did. Who knows if there will ever be a jQuery 1.8.1? If you find a bug after we release jQuery 1.8, it could be six months before it’s fixed. Six months of misery, all because you didn’t test the Release Candidate! One and a half women could make a baby while you’re waiting for that critical bug fix! For your own sake, please try it out!

jQuery 1.8rc1 Change Log

The current change log of the 1.8rc1 release.

Ajax

• #8205: JSONP random result is causing memory leak in IE8
• #8653: jQuery.param outputs "null" and "undefined" in the query string
• #9399: Deprecate jqXHR.success and jqXHR.error
• #10285: evalScript rcleanScript replacement fails in IE8
• #10524: jQuery.fn.load does not merge data parameter with jQuery.ajaxSetup
• #10944: $.ajax does not always return an object implementing the Promise interface
• #11013: Deprecate use of Deferred/Promise with sync $.ajax
• #11402: evalScript function fails with error error 80020101 in IE
• #11743: jQuery silently ignores errors during script tag ajax request in $.appendTo()
• #11778: Cached XHR requests should still resolve asynchronously
• #12122: jQuery.ajax() async deprecate use with $.Deferred

Attributes

• #11153: jQuery 1.7 Strips Carriage Returns in IE 8
• #11212: Sizzle.getText converts unbreakable space into whitespace on IE
• #11547: XML DOM .removeAttr() doesn't remove cased attributes
• #11962: Standardize getter return values for empty sets.
• #12127: Clone does not correctly copy checked state in IE10

Build

• #11767: Support custom build without effects
• #11789: Update README to describe grunt build system
• #11856: modularize dimensions
• #11857: modularize css
• #11865: modularize offset
• #11965: Create deprecated.js to contain as much of the deprecated stuff as possible

Core

• #10657: Deprecate jQuery#size() in favor of jQuery#length
• #11290: selector interpreted as HTML
• #11470: Adding a builtin readyP promise
• #12018: $(document).ready() fires too early in IE8
• #12026: Let $(html, props) use any jQuery.fn method

Css

• #10373: `document.defaultView` => `window`
• #10413: width, innerWidth, innerHeight, outerWidth, outerHeight are inaccurate for a "box-sizing: border-box" child of hidden parent
• #10679: CSS3 vendor prefix support
• #11004: getWH incorrectly removes padding and border width when box-sizing is border-box
• #11787: Remove jQuery.curCSS
• #12088: Webkit now returning percentages for more getComputedStyle properties
• #12148: hide event don't fire when toggle

Data

• #7579: jQuery.data() truncates numbers taken from data-xxx attributes
• #10589: Remove $.fn.data("events")

Deferred

• #11010: Make Deferred.then == Deferred.pipe like Promise/A
• #11011: Allow traditional options object for $.Callbacks flags
• #11736: Remove Deferred .isResolved() and .isRejected()
• #11749: Preserve context objects when multiple Deferred object are passed to $.when()

Dimensions

• #6724: wrong $(window).height() in mobile safari (iphone)
• #10877: Make outerWidth/Height a setter
• #11293: Reading width or outerWidth of empty TDs alters columns width values
• #11604: Switch $(elem).width(-val) from no-op to $(elem).width(0)
• #11724: $(document).height() changed in Firefox 12

Effects

• #7109: animate width starts with invalid width on webkit
• #7157: Animation callback shows element is still ":animated"
• #8387: flickering problem with jQuery 1.5 hide/show issue with inline and inline-block elements on webkit browsers
• #8627: .animate() fails on letterSpacing in IE (regression in 1.5.1)
• #8892: Callback is raised before objects are shown with fadeIn() and jQuery.fx.off = true
• #9217: javascript error in IE8 when animating element is removed before animation finishes
• #9505: animate() issue when mixing percentages and pixels in WebKit
• #11635: Explicit overflow:auto is overridden by inline overflow:hidden during animation
• #11755: animate and it aliases should not use :hidden selector
• #11797: New animation related events
• #11854: percentage animations jump to end
• #11971: Animating background-position fails in IE8
• #11999: Incremental animation on fixed div does subtraction instead of addition in Chrome.
• #12117: overflow hidden not properly set when animating to 0 height or width
• #12150: border-spacing property accumulates when rows are shown and hidden

Event

• #8545: Leak with events in IE
• #10067: Firing $.ready on document.readyState === 'interactive' too
• #10895: The doScrollCheck ie hack in bindReady degrades ie7 performance for no reason whatsoever
• #11101: Deprecate "exclusive" events option from trigger method
• #11315: Problems with delegate() and :first in nested elements with equivalent classes
• #11328: Ctrl key doesn't set event.metaKey to true on Windows
• #11382: Mouseenter doesn't fire on a disabled input element
• #11500: Bug : "change" event handler not executed when triggered manually on IE7 & IE8
• #11621: Triggering a event on document doesn't bubble to window
• #11718: Deprecate .data() events
• #11719: Deprecate .bind("ready") event
• #11731: Deprecate "hover" pseudo-event
• #11733: Deprecate .load(), .unload(), and .error() methods
• #11764: Allow delegated non-native events on disabled elements
• #11786: Deprecate .toggle( handler, handler, … ) signature

Manipulation

• #8894: appendTo() and alike methods called after clone() returns incorrect jQuery set in IE
• #10324: Clone does not copy innerHTML of object element in IE9
• #11231: Append, Prepend, After, Before should accept an array as first argument
• #11338: Inconsistent behavior with .replaceWith() and disconnected nodes.
• #11528: ie8 serialization bug with .html() also hitting html5 tags
• #11566: node.append et al. does not work when node is a DocumentFragment
• #11617: Define a $.parseHTML method for creating HTML fragments
• #11809: Memory leak in .text(val) setter?
• #11898: prevAll() with a complicated :not() selector returns results in wrong order
• #12132: IE10 bug when cloning an object element without a parentNode

Offset

• #10996: Simplify offset()
• #11823: Remove webkitConvertPointFromNodeToPage

Selector

• #3778: selector matching issues
• #5568: Selectors behave differently with comments tags on FF/IE
• #7596: xpath selector attribute name with brackets [] fails
• #8473: In IE9rc *[tabIndex] select all elements without tabindex also
• #8906: .(prevAll('span:has(input,select,textarea)')
• #9400: Deprecate :text, :radio, :checkbox, etc. selector extensions
• #9810: Rewrite Positional Selector Logic
• #10003: Regression/BC break from #6963
• #10074: Chaining two [] selector with :first not working
• #10499: :nth-child() inside :has() treated as if outside it
• #10570: :text selector throws an error in IE7 when there is a cross domain iframe on the page
• #10697: Sizzle revamp
• #10799: Inconsistent results with [name="name"] selectors (also breaks .has)

It’s been a crazy few weeks around jQuery Central, what with the release of Beta 1 and the jQuery Conference in San Francisco following that. Fear not! Between all the travel, conferences, meetings, and blog posts about the future of jQuery, we’ve actually managed to write some more code. As proof, here is jQuery 1.8 Beta 2:

http://code.jquery.com/jquery-1.8b2.js

This is the critical section in the program where we call on you, the jQuery community, to help us bring this one home. Use Beta 2 with old browsers, new browsers, red browsers and blue browsers. (That’s IE6, Chrome Canary, Opera, and Internet Explorer, respectively.) Test this file with all your code, please test it well in every mode. Did something break in Beta 2? Please tell us now before we’re through!

With assistance from those of you who tested Beta 1, we found a few bugs and squashed them. We can’t emphasize enough how important it is for us to get feedback from you as you test with these beta versions. We don’t like releasing final versions that cause problems when you drop them into your web pages, and the way to prevent that is to test with the beta and let us know about problems in advance.

NOTE: This release required coordination with jQuery UI to fix a few problems. For that reason, pages using jQuery UI will need to include the latest UI master version to test against jQuery 1.8b2. You can get it here: http://code.jquery.com/ui/jquery-ui-git.js. There will be a maintenance release of jQuery UI 1.8 that includes jQuery core 1.8 support, but users are encouraged to update to jQuery UI 1.9 when it is released.

If you find a problem, please try to reduce it to a simple test case. jsFiddle is our preferred way to get test cases, since it allows us to tweak the test case, diagnose the problem, and explore solutions. (Select jQuery (edge) for the framework, which is the latest code.) With test case in hand, head over to the bug tracker and let us know what happened. Thanks!

In addition to bug fixes reported in Beta 1, this new beta also has a significant rewrite of the Sizzle engine for even better performance. It fixes a big pile of bugs related to IE 6, 7, and 8 and makes those browsers more consistent to use. Perfection with oldIE will always be an elusive thing, but we’re still trying to make your development life as easy as possible no matter the browser.

If you build your own custom versions as described in the README file on Github, you now have the option of leaving out some of the deprecated functionality that will be removed in future versions. We’ll be adding to this file as we isolate additional deprecated functionality.

Below is a complete list of the changes since jQuery 1.7.2.

jQuery 1.8b2 Change Log

The current change log of the 1.8b2 release.

Ajax

• #4624: Charset in default ajaxSettings.contentType
• #10978: jQuery.param() should allow non-native constructed objects as property values
• #11264: evalScript() uses defaults set by ajaxSetup()
• #11426: jQuery.ajax() always fails when requesting JPG images in IE

Attributes

• #5571: Allow chaining when passing undefined to any setter in jQuery
• #10828: attr("coords") returns undefined in IE7
• #10870: Incorrect behaviour of $.removeAttr("selected")
• #11316: Consider looking through valHooks by element type first, then by nodeName instead of the other way around

Build

• #10692: Configure the jshint options to more accurately match the style guide
• #10693: generalize the "test something in an iframe" code in unit tests
• #10901: have unit tests fail if the tester is running from file:// or doesn't have PHP
• #10902: ability to test a built version of jQuery in unit tests
• #10931: Unit tests shouldn't require internet access

Core

• #10466: jQuery.param() mistakes wrapped primitives for deep objects

Css

• #10639: outerWidth(true) and css('margin') returning % instead of px in Webkit
• #10754: have jQuery.swap return the return of the callback instead of just executing it
• #10782: Incorrect calculating width
• #10796: Bug in IE7 with $('#el').css.('background-position')
• #10858: css.js regular expressions are incomplete
• #11119: The curCSS function only need 2 arguments

Data

• #11309: hexadecimal-formatted data-* attributes parsed incorrectly

Deferred

• #11306: calling .disable() or .lock() on a $.Callbacks object breaks its fired() status

Effects

• #8498: Animate Hooks
• #10006: method show is not working as expected in all browsers when called for document fragment
• #10848: Animation toggling loses state tracking in certain atomic edge cases
• #11415: Silently ignore negative CSS values where they are illegal
• #11469: Negative margin in animations (.animate)

Event

• #8165: .live('click', handler) fires on disabled buttons with child elements in Chrome
• #10819: Eliminate "this.on.call(this, "
• #10878: $("select").live("change", function(){ …broken in IE8 in jQuery 1.7
• #10961: Error in XRegExp using jQuery 1.7.1 in IE6-9
• #10970: The .on() selector parameter doesn't work with :not(:first) selector
• #10984: Cannot off() custom events ($.event.special)
• #11021: Hover hack mangles a namespace named "hover"
• #11076: .clone(true) loses delegation filters
• #11130: jQuery.fn.on: binding map with null selector ignores data
• #11145: $(document).on() not working with name="disabled"

Manipulation

• #9427: Passing undefined to .text() does not trigger setter
• #10753: inline the evalScript function in manipulation.js as it's only used once
• #10864: text() method on a document fragment always returns the empty string
• #11055: Update HTML5 Shim elements list to support latest html5shiv
• #11217: Append problem with webkit
• #11291: Cloning XMLDoc's with HTML5 nodeName's breaks on IE
• #11323: script tags with type="text/ecmascript" leak into the DOM
• #11356: safeFragment memory leak

Misc

• #10952: .fired() doesn't work on Callbacks object when it is flagged with "once"
• #11257: Wrong path to source files in test suite if PHP missing

Queue

• #10967: .promise() does not attach methods onto target

Support

• #7986: Bug in $.support.boxModel if page has DIV-element CSS
• #11048: Support Tests affect layout for positioned elements in IE6-9
• #11337: Bug in $.support.reliableMarginRight

Traversing

• #11370: $('<div>').siblings() throws exception