Since March 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The InputEvent.isComposing read-only property returns a boolean value indicating if the event is fired after compositionstart and before compositionend.
A boolean.
const inputEvent = new InputEvent("syntheticInput", false);
console.log(inputEvent.isComposing); // return false
| Specification |
|---|
| UI Events> # dom-inputevent-iscomposing> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
isComposing |
60 | 79 | 31 | 47 | 16.4 | 60 | 31 | 44 | 16.4 | 8.0 | 60 | 16.4 |
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https://developer.mozilla.org/en-US/docs/Web/API/InputEvent/isComposing