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HTML onfocus 事件属性

❮ HTML 事件属性

示例

当输入字段获得焦点时执行 JavaScript

<input type="text" id="fname" onfocus="myFunction(this.id)">
亲自尝试 »

下面有更多“亲自尝试”的示例。


定义和用法

onfocus 属性在元素获得焦点时触发。

onfocus 最常与 <input>、<select> 和 <a> 一起使用。

提示:onfocus 属性与 onblur 属性相反。


浏览器支持

事件属性
onfocus

语法

<element onfocus="script">

属性值

描述
script 在 onfocus 上运行的脚本

技术细节

支持的 HTML 标签 所有 HTML 元素,除了:<base>、<bdo>、<br>、<head>、<html>、<iframe>、<meta>、<param>、<script>、<style> 和 <title>

更多示例

示例

将“onblur”与“onfocus”属性一起使用

<input type="text" onfocus="focusFunction()" onblur="blurFunction()">
亲自尝试 »

相关页面

HTML DOM 参考:onfocus 事件


❮ HTML 事件属性
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