InputEvent.isComposing
The InputEvent.isComposing read-only property returns a Boolean value indicating if the event is fired after compositionstart and before compositionend.
这是一个只读属性，返回 boolean 类型。表示正处于输入事件的开始与结束之间，表示正在输入状态。
Syntax
var bool = event.isComposing;
Example
js
var inputEvent = new InputEvent("syntheticInput", false);
console.log(inputEvent.isComposing); // return false
Specifications
| Specification |
|---|
| UI Events # dom-inputevent-iscomposing |
Browser compatibility
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