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返回值:jQueryfocusin([data],fn)

概述

在每一個匹配元素的focusin事件中綁定一個處理函數(shù)。

當(dāng)一個元素,或者其內(nèi)部任何一個元素獲得焦點(diǎn)的時候會觸發(fā)這個事件。這跟focus事件區(qū)別在于,他可以在父元素上檢測子元素獲取焦點(diǎn)的情況。

參數(shù)

fnFunctionV1.0

在每一個匹配元素的focusin事件中綁定的處理函數(shù)。

[data],fnString,FunctionV1.4.3

data:focusin([Data], fn) 可傳入data供函數(shù)fn處理。

fn:在每一個匹配元素的focusin事件中綁定的處理函數(shù)。

示例

描述:

獲得焦點(diǎn)后會觸發(fā)動畫:

HTML 代碼:
<p><input type="text" /> <span>focusout fire</span></p>
<p><input type="password" /> <span>focusout fire</span></p>
jQuery 代碼:
$("p").focusin(function() {
  $(this).find("span").css('display','inline').fadeOut(1000);
});
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