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FocusEvent 接口表示和焦点相关的事件比如 focus, blur, focusin, 和 focusout。
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构造器
FocusEvent()- 使用给定的参数创建
FocusEvent事件。
属性
此接口从它的父级继承了属性 UIEvent, 间接来自于 Event.
FocusEvent.relatedTarget只读EventTarget这个代表此次事件的次要目标. 在一些案例中，例如切换浏览器tab标签时， 为了安全的原因，这个属性可能会被设置为null。
方法
This interface has no specific methods. It inherits methods from its parent UIEvent, and indirectly from Event.
规范
| 规范 | 状态 | 备注 |
|---|---|---|
| UI Events FocusEvent |
Working Draft | |
| Document Object Model (DOM) Level 3 Events Specification FocusEvent |
Obsolete | Initial definition. |
浏览器兼容性
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FocusEvent | Chrome Full support Yes | Edge Full support 12 | Firefox Full support 24 | IE Full support 9 | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 24 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
FocusEvent() constructor | Chrome Full support Yes | Edge Full support ≤18 | Firefox Full support 24 | IE No support No | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 24 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
relatedTarget | Chrome Full support Yes | Edge Full support 12 | Firefox Full support 48 | IE Full support 9 | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 48 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
参见
Event基接口