当元素即将接收 focus 事件时，focusin 事件被触发。 这个事件和 focus 事件的主要区别在于后者不会冒泡。
基本信息
- Specification
- DOM L3
- Interface
FocusEvent- Bubbles
- Yes
- Cancelable
- No
- Target
- Element
- Default Action
- None.
属性
| Property |
Type |
Description |
target 只读 |
EventTarget |
event target receiving focus. |
type 只读 |
DOMString |
The type of event. |
bubbles 只读 |
Boolean |
Whether the event normally bubbles or not |
cancelable 只读 |
Boolean |
Whether the event is cancellable or not? |
relatedTarget 只读 |
EventTarget (DOM element) |
event target losing focus (if any). |
浏览器兼容性
| Feature |
Chrome |
Edge |
Firefox (Gecko) |
Internet Explorer |
Opera |
Safari |
| Basic support |
(Yes) |
(Yes) |
52 (52) |
(Yes) |
(Yes) |
(Yes) |
| Feature |
Android |
Edge |
Firefox Mobile (Gecko) |
IE Mobile |
Opera Mobile |
Safari Mobile |
| Basic support |
(Yes) |
(Yes) |
52.0 (52) |
(Yes) |
? |
(Yes) |
相关事件
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