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jQuery focus() 方法

❮ jQuery 事件方法

示例

将函数附加到 focus 事件。当 <input> 字段获得焦点时,将触发 focus 事件。

$("input").focus(function(){
  $("span").css("display", "inline").fadeOut(2000);
});
自己试试 »

定义和用法

当元素获得焦点时(当通过鼠标点击或“tab 键导航”选择它时),就会发生 focus 事件。

focus() 方法触发 focus 事件,或附加一个函数在发生 focus 事件时运行。

提示:此方法通常与 blur() 方法一起使用。


语法

为选定的元素触发 focus 事件

$(选择器).focus() 试试看

将函数附加到 focus 事件

$(选择器).focus(函数) 试试看

参数 描述
function 可选。指定在发生 focus 事件时要运行的函数

❮ jQuery 事件方法

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