Web/API/KeyboardEvent/isComposing

The KeyboardEvent.isComposing read-only property returns a Boolean value indicating if the event is fired within a composition session, i.e. after compositionstart and before compositionend.

Syntax

var bool = event.isComposing;

Example

var kbdEvent = new KeyboardEvent("syntheticKey", false);
console.log(kbdEvent.isComposing); // return false

Specifications

Specification	Status	Comment
UI EventsThe definition of 'KeyboardEvent.prototype.isComposing' in that specification.	Working Draft
Document Object Model (DOM) Level 3 Events SpecificationThe definition of 'KeyboardEvent.prototype.isComposing' in that specification.	Obsolete	Initial definition.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
isComposing	Chrome Full support 56	Edge Full support ≤79	Firefox Full support 31	IE No support No	Opera Full support 43	Safari Full support 10.1	WebView Android Full support 56	Chrome Android Full support 56	Firefox Android Full support 31	Opera Android Full support 43	Safari iOS Full support 10.3	Samsung Internet Android Full support 6.0

Legend

Full support  

Full support

No support  

No support

See also

• compositionstart and compositionend
• KeyboardEvent

KeyboardEvent.isComposing by Mozilla Contributors is licensed under CC-BY-SA 2.5.