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返回值:jQueryfocusin([data],fn)

概述

在每一个匹配元素的focusin事件中绑定一个处理函数。

当一个元素,或者其内部任何一个元素获得焦点的时候会触发这个事件。这跟focus事件区别在于,他可以在父元素上检测子元素获取焦点的情况。

参数

fnFunctionV1.0

在每一个匹配元素的focusin事件中绑定的处理函数。

[data],fnString,FunctionV1.4.3

data:focusin([Data], fn) 可传入data供函数fn处理。

fn:在每一个匹配元素的focusin事件中绑定的处理函数。

示例

描述:

获得焦点后会触发动画:

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").focusin(function() {
  $(this).find("span").css('display','inline').fadeOut(1000);
});
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