compositionupdate
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2017.
compositionupdate 事件触发于字符被输入到一段文字的时候（这些可见字符的输入可能需要一连串的键盘操作、语音识别或者点击输入法的备选词）
| Bubbles | Yes |
| Cancelable | No |
| Target objects | Element |
| Interface | TouchEvent |
属性
| Property | Type | Description |
|---|---|---|
target 只读 |
EventTarget |
焦点所在的，处理文字输入的元素。 |
type 只读 |
DOMString |
The type of event. |
bubbles 只读 |
boolean |
Does the event normally bubble? |
cancelable 只读 |
boolean |
Is it possible to cancel the event? |
view 只读 |
WindowProxy |
Document.defaultView (the window of the document). |
detail 只读 |
long (float) |
0. |
data 只读 |
DOMString (string) |
要被替换掉的字符串，如果输入时没有字符串被选，则为空字符串。只读。 |
locale 只读 |
DOMString (string) |
输入事件的语言代号，或者空字符串。只读。 |
规范
| Specification |
|---|
| UI Events # event-type-compositionupdate |
浏览器兼容性
BCD tables only load in the browser