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
规范
| 规范 | 状态 | 备注 |
|---|---|---|
| UI Events FocusEvent |
Working Draft | |
| Document Object Model (DOM) Level 3 Events Specification FocusEvent |
Obsolete | 初始定义 |
浏览器兼容性
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参见
Event基接口