### 返回值:jQueryscroll([[data],fn])
### 概述
当用户滚动指定的元素时，会发生 scroll 事件。
scroll 事件适用于所有可滚动的元素和 window 对象（浏览器窗口）。
### 参数
#### **fn**Function*V1.0*
在每一个匹配元素的scroll事件中绑定的处理函数。
#### **[data],fn**String,Function*V1.4.3*
**data**:scroll([Data], fn) 可传入data供函数fn处理。
**fn**:在每一个匹配元素的scroll事件中绑定的处理函数。
### 示例
#### 描述:
当页面滚动条变化时，执行的函数:
##### jQuery 代码:
~~~
$(window).scroll( function() { /* ...do something... */ } );
~~~
#### 描述:
对元素滚动的次数进行计数：
##### jQuery 代码:
~~~
$("div").scroll(function() {
$("span").text(x+=1);
});
~~~
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