$(document).ready()的简写方式，允许你绑定一个在DOM文档载入完成后执行的函数。这个函数的作用如同$(document).ready()一样，只不过用这个函数时，需要把页面中所有其他的$()操作符都包装到其中来。从技术上来说，这个函数是可链接的－－但真正以这种方式链接的情况并不多。你可以在一个页面中使用任意多个$(document).ready事件。

要详细了解ready事件，见ready(Function)。

返回值:jQuery

参数:

• fn (Function): 当DOM载入完成后要执行的函数

示例:

当DOM就绪可用时，执行其中的函数。

jQuery 代码:

$(function(){ // DOM文档已经载入就绪 });

$( fn )

A shorthand for $(document).ready(), allowing you to bind a function to be executed when the DOM document has finished loading. This function behaves just like $(document).ready(), in that it should be used to wrap other $() operations on your page that depend on the DOM being ready to be operated on. While this function is, technically, chainable - there really isn't much use for chaining against it.

You can have as many $(document).ready events on your page as you like.

See ready(Function) for details about the ready event.

Return value: jQuery
Parameters:

• fn (Function): The function to execute when the DOM is ready.

Example:

Executes the function when the DOM is ready to be used.

 $(function(){     // Document is ready   });  

Example:

Uses both the shortcut for $(document).ready() and the argument to write failsafe jQuery code using the $ alias, without relying on the global alias.

 jQuery(function($) {     // Your code using failsafe $ alias here...   });