isComposing
The KeyboardEvent.isComposing read-only property returns a boolean value indicating if the event is fired within a composition session, i.e., after Element/compositionstart_event and before Element/compositionend_event.
The KeyboardEvent.isComposing read-only property returns a boolean value indicating if the event is fired within a composition session, i.e., after Element/compositionstart_event and before Element/compositionend_event.