HTML onkeydown 属性
定义和用法
当用户按下键（在键盘上）时，onkeydown 属性会触发。
提示： 与 onkeydown 事件相关的事件顺序
- onkeydown
- onkeypress
- onkeyup
适用对象
onkeydown 属性是 事件属性 的一部分，可以在任何 HTML 元素上使用。
| 元素 | 事件 |
|---|---|
| 所有 HTML 元素 | onkeydown |
示例
浏览器支持
| 事件属性 | |||||
|---|---|---|---|---|---|
| onkeydown | 是 | 是 | 是 | 是 | 是 |
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