### 返回值:jQueryunload([[data],fn])
### 概述
在每一个匹配元素的unload事件中绑定一个处理函数。
### 参数
#### **fn**Function*V1.0*
在每一个匹配元素的unload事件中绑定的处理函数。
#### **[data],fn**String,Function*V1.4.3*
**data**:unload([Data], fn) 可传入data供函数fn处理。
**fn**:在每一个匹配元素的unload事件中绑定的处理函数。
### 示例
#### 描述:
页面卸载的时候弹出一个警告框:
##### jQuery 代码:
~~~
$(window).unload( function () { alert("Bye now!"); } );
~~~
- 速查表
- 核心
- jQuery(selector,[context])
- jQuery(html,[ownerDocument])
- jQuery(callback)
- jQuery.holdReady(hold)
- each(callback)
- size()
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- selector
- context
- get([index])
- index([selector|element])
- data([key],[value])
- removeData([name|list])
- jQuery.data(element,[key],[value])
- queue(element,[queueName])
- dequeue([queueName])
- clearQueue([queueName])
- jQuery.noConflict([extreme])
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- 事件
- ready(fn)
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- hover([over,]out)
- toggle(fn, fn2, [fn3, fn4, ...])
- blur([[data],fn])
- change([[data],fn])
- click([[data],fn])
- dblclick([[data],fn])
- error([[data],fn])
- focus([[data],fn])
- focusout([data],fn)
- keydown([[data],fn])
- keypress([[data],fn])
- keyup([[data],fn])
- mousedown([[data],fn])
- mouseenter([[data],fn])
- mouseleave([[data],fn])
- mousemove([[data],fn])
- mouseout([[data],fn])
- mouseover([[data],fn])
- mouseup([[data],fn])
- resize([[data],fn])
- scroll([[data],fn])
- select([[data],fn])
- submit([[data],fn])
- unload([[data],fn])
- 效果
- show([speed,[easing],[fn]])
- hide([speed,[easing],[fn]])
- slideDown([speed],[easing],[fn])
- slideUp([speed,[easing],[fn]])
- slideToggle([speed],[easing],[fn])
- fadeIn([speed],[easing],[fn])
- fadeOut([speed],[easing],[fn])
- fadeTo([[speed],opacity,[easing],[fn]])
- fadeToggle([speed,[easing],[fn]])
- animate(param,[spe],[e],[fn])
- stop([cle],[jum])
- delay(duration,[queueName])
- jQuery.fx.off
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- Ajax
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- load(url,[data],[callback])
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- serialize()
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- 工具
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- def.then(doneCal,failCal)
- def.progress([type],[target])
- def.pipe([donFil],[faiFil],[proFil])
- def.always(alwCal,[alwCal])
- def.notify(args)
- def.notifyWith(context,[args])
- def.state()
- Callbacks
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- callbacks.disable()
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- callbacks.fire(arguments)
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- callbacks.has(callback)
- callbacks.lock()
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- jQuery.callbacks(flags)
- 关于
- 关于jQuery API 文档
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