jQuery 1.4 Released, Happy 4th Birthday jQuery

jQuery 1.4 Released, Happy 4th Birthday jQuery

     来自jquery官方网站的消息 ,目前最流行的JavaScript/Ajax库jQuery新版本1.4已经发布,为jQuery项目4周年14天庆祝送上一份大礼。

1.4的压缩版只有23K,未压缩版154K。此外,Google也在自己的服务器上提供了副本,作为Google Ajax API的一部分,可以直接引用。

jQuery 1.4对代码库进行了内部重写组织,开始建立一些风格规范。老的core.js文件被分为attribute.js, css.js, data.js, manipulation.js, traversing.js和queue.js。CSS和attribute的逻辑分离。并修正了207个老版本的错误。

主要新特性有:

1. 常用方法的性能大幅提升 。重写了大部分较早期的函数。

2. 更容易使用的设置函数 (setter function)。为所有对象新增了许多易用的设置函数。

3. Ajax方面的改进 。引入了许多Ajax和JSON处理方面的更新,包括HTML5元素的序列化。

此外,attribute(改进了.attr()的性能)、jQuery()核心函数、CSS(.css()性能有两倍提升)、特效和事件、DOM操作等也有显著改进。

翻译自:http://techie-buzz.com/internet-tools/jquery-14-released-on-4th-jquery-birthday.html

 

以下是官方文档:

 

JQuery 1.4 Roadmap

From jQuery JavaScript Library

Jump to: navigation , search

ROUGH NOTES This is just some rough notes for things to look at for 1.3.x/1.4.

Contents

  • 1 Core
  • 2 DOM
  • 3 Selectors
  • 4 Attributes / CSS
  • 5 Data
  • 6 Offset
  • 7 Events
  • 8 Ajax
  • 9 Effects
  • 10 Structure
  • 11 Testing
  • 12 Misc

 

[ edit ]

Core

  • jQuery.require (require JavaScript modules and CSS to load before ready runs)
 jQuery.require("foo.js");

jQuery.require("foo2.js");

jQuery(function(){ ... });

See also xLazyLoader

  • Dynamic loading of modules when they're needed (would require synchronous script loading in core)
  • $.ready failover. If not enough functionality is provided, have ready gracefully not load.
  • Widget Factory
  • .toArray() (As alternative to .get())
  • .get(-1) Allow for negative numbers to .get().
  • $.isObject() (Possibly for use by deep extending)
  • Use $.isArray() and $.isObject() for deep extending Discussion , Discussion
  • Implicit ready event like Mike Alsup is doing with his plugins now .
[ edit ]

DOM

  • $.contains (determine if an element is inside another one)
 jQuery("div").contains(DOMElement)

  • Forcefully remove html/head/body from HTML injection
  • Handle HTML injection in XML documents (serialize a DOM then insert)
  • Use .outerHTML to cleanup after .remove()
  • Implement a .extract()/.detach() method (remove the element from the DOM, leaves events and data intact) Discussion 1 , Discussion 2
  • .not() should accept a function for filtering
  • .filter() should accept an Element, Selector, or Array
  • .index() (no arg) gives you the position of the element amongst its siblings
  • .children() should be sorted in order
  • .after() should act like .add() if the elements are disconnected.
  • .before() should work similarly, as well.
[ edit ]

Selectors

  • Force document order for comma-separated queries. Discussion (In 1.3.2)
  • Use querySelectorAll for element-rooted queries. Discussion
  • Piggy-back on a central data cache, if one exists.
  • "#id p" should be as fast as $("#id").find("p") (In 1.3.3)
[ edit ]

Attributes / CSS

  • Rewrite (reorganize and separate these two pieces of functionality) (reorganized and separated in 1.3.3)
    • Use only camelCase for styles
    • Related: Fix camelCase of animation styles
    • Why is Math.max used in height/width? Should be removed? (Needed: IE freaks out with negative numbers)
  • Deactivate alpha filter in IE when set to 1.0
  • Get filter value from stylesheet for alpha
  • Allowing a function as the "setter" argument for .css() -- like we have in .attr() -- and maybe for .val(), .html(), and .text() as well.
  • Allow retrieval of multiple attributes/styles using a space separated string
  • Enhance .toggleClass (in 1.3.3)
  • .radioClass()
  • colSpan
[ edit ]

Data

  • A way to copy all data from one element to another.
[ edit ]

Offset

  • Make offset and position a setter offset setter plugin
  • Faster Initialization (in 1.3.3)
  • Use parseFloat (in 1.3.3)
  • boundingClientRect check (in 1.3.3)
[ edit ]

Events

  • Have <img>.load check for .complete in IE (in case the file was already loaded and cached) Discussion
  • Add the mousewheel event to core
  • Adapt mouseenter/mouseleave to work with live
  • Multiple binding with namespaces
  • Event scoping Discussion ticket (in jQuery 1.3.3)
  • .live()
    • $("foo", context).live(...) (in 1.3.3, might have issues with closest method not respecting context though)
    • Implement .live("change") see also
    • Implement .live("submit")
    • Implement .live("blur/focus")
  • Do garbage collection asynchronously
  • Events should be stored as an array [1] (Also, need a ticket on Chrome executing events out of order.)
  • Iframe load event not possible Discussion
[ edit ]

Ajax

  • Use JSON API if available to parse JSON. More info
  • Remove type cruft from $.get
  • Add some extra simple arguments to $.ajax.
 $.ajax(type, url, options);

  • Support options argument in $.get and $.post
 $.get(url, data, dataType, options);

$.post(url, data, dataType, options);

  • Improved $.param serialization
  • Dynamic loading of stylesheets
  • Look at headers to make intelligent decisions about the content-type
[ edit ]

Effects

  • Synchronized animations (Sync multiple animations together)
  • fadeTo show also show the element, if it's hidden. (in 1.3.3)
  • Animate to end value of 'auto'
[ edit ]

Structure

  • Reduce the number of function calls needed for common jQuery methods
  • Split up jQuery structure into smaller modules (core, traversing, manipulation, attributes/css)
    • This was done in r6283 (for 1.3.3), although there are some dependency issues to work out
  • Make it possible to only load the core module and be able to load all the rest dynamically
    • Seems like this would force us to expose a lot of the private methods/properties we have right now and potentially ditch the use of a closure.
  • Passing the XHTML test suite
  • Passing Object.prototype tests
  • Cache static objects
  • Standardize RegExp usage (in 1.3.3)
  • Improve RegExp Callbacks (in 1.3.3)
  • Working in evalInSandbox
  • Keep a separate data() cache for the document object (to avoid any obvious pollution).
  • Work as a Caja Gadget [2] [3]
[ edit ]

Testing

  • Runnable DOM Ready tests
  • Object.prototype tests
  • Integrate test suites from plugins into jQuery test suite
[ edit ]

Misc

  • Work on the jQuery Core Style Guidelines
  • Make sure that we pass Spidermonkey/Rhino Strict
  • Include that check into the build process

原文链接: http://blog.csdn.net/vanessa219/article/details/5192564

你可能感兴趣的:(jQuery 1.4 Released, Happy 4th Birthday jQuery)