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返回值:jQuery
focusin([data],fn)
概述
当元素获得焦点时，触发 focusin 事件。
focusin事件跟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);
});