HTML onfocus 属性
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。
适用范围
onfocus 属性是 事件属性 的一部分，可以用于任何 HTML 元素。
| 元素 | 事件 |
|---|---|
| 所有 HTML 元素 | onfocus |
示例
浏览器支持
| 事件属性 | |||||
|---|---|---|---|---|---|
| onfocus | 是 | 是 | 是 | 是 | 是 |
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