### 返回值:jQuerydblclick([[data],fn])
### 概述
触发每一个匹配元素的dblclick事件。
这个函数会调用执行绑定到dblclick事件的所有函数，包括浏览器的默认行为。可以通过在某个绑定的函数中返回false来防止触发浏览器的默认行为。dblclick事件会在元素的同一点双击时触发。
### 参数
#### **fn**Function*V1.0*
在每一个匹配元素的dblclick事件中绑定的处理函数。
#### **[data],fn**String,Function*V1.4.3*
**data**:dblclick([Data], fn) 可传入data供函数fn处理。
**fn**:在每一个匹配元素的dblclick事件中绑定的处理函数。
### 示例
#### 描述:
给页面上每个段落的双击事件绑上 "Hello World!" 警告框
##### jQuery 代码:
~~~
$("p").dblclick( function () { alert("Hello World!"); });
~~~
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