### 返回值:jQueryfocusout([data],fn)
### 概述
当元素失去焦点时触发 focusout 事件。
focusout事件跟blur事件区别在于，他可以在父元素上检测子元素失去焦点的情况。
### 参数
#### **fn**Function*V1.0*
在每一个匹配元素的focusout事件中绑定的处理函数。
#### **[data],fn**String,Function*V1.4.3*
**data**:focusout([Data], fn) 可传入data供函数fn处理。
**fn**:在每一个匹配元素的focusout事件中绑定的处理函数。
### 示例
#### 描述:
失去焦点后会触发动画:
##### HTML 代码:
~~~
<p><input type="text" /> <span>focusout fire</span></p>
<p><input type="password" /> <span>focusout fire</span></p>
~~~
##### jQuery 代码:
~~~
$("p").focusout(function() {
$(this).find("span").css('display','inline').fadeOut(1000);
});
~~~
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