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这是一个实验中的功能
此功能某些浏览器尚在开发中，请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订，所以在未来版本的浏览器中该功能的语法和行为可能随之改变。
FocusEvent 接口表示和焦点相关的事件比如 focus, blur, focusin, 和 focusout。
构造器
FocusEvent()- 使用给定的参数去创建FocusEvent事件。
属性
Inherits properties from its parent UIEvent, and indirectly from Event.
FocusEvent.relatedTarget只读- Is an
EventTargetrepresenting a secondary target for this event. As in some cases (like when tabbing in or out a page), this property may be set tonullfor security reasons.
方法
No specific method; inherits methods from its parent UIEvent, and indirectly from Event.
Specifications
| Specification | Status | Comment |
|---|---|---|
| Document Object Model (DOM) Level 3 Events Specification FocusEvent |
Obsolete | Initial definition. |
Browser compatibility
We're converting our compatibility data into a machine-readable JSON format.
This compatibility table still uses the old format,
because we haven't yet converted the data it contains.
Find out how you can help!
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | 24.0 (24.0) | 9.0 | (Yes) | (Yes) |
| Constructor | (Yes) | 24.0 (24.0) | 未实现 | (Yes) | (Yes) |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | (Yes) | 24.0 (24.0) | (Yes) | (Yes) | (Yes) |
| Constructor | (Yes) | 24.0 (24.0) | 未实现 | (Yes) | (Yes) |
See also
- The
Eventbase interface.