jQuery 1.4 Released, Happy 4th Birthday jQuery

发表于


     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

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

Contents







 


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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
    .


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DOM



  • $.contains
    (determine if an element is inside another one)


 jQuery("div").contains(DOMElement)





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Selectors



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Attributes / CSS



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Data



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Offset



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Events



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Ajax 



 $.ajax(type, url, options);





  • Support options argument in $.get and $.post


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



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





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Effects



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Structure



  • Reduce the number of function calls needed for common jQuery methods

  • Split up jQuery structure into smaller modules (core, traversing, manipulation, attributes/css)


  • 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]


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Testing



  • Runnable DOM Ready tests

  • Object.prototype tests

  • Integrate test suites from plugins into jQuery test suite


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Misc