This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped. Avoid using it and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The initCompositionEvent() method of the CompositionEvent interface initializes the attributes of a CompositionEvent object instance.


 compositionEventInstance.initCompositionEvent(typeArg, canBubbleArg, cancelableArg, viewArg, dataArg, localeArg)


A DOMString representing the type of composition event; this will be one of compositionstart, compositionupdate, or compositionend.
A Boolean specifying whether or not the event can bubble.
A Boolean shether or not the event can be canceled.
The Window object from which the event was generated.
A DOMString representing the value of the data attribute.
A DOMString representing the value of the locale attribute.

Return value



Specification Status Comment
Document Object Model (DOM) Level 3 Events Specification
The definition of 'initCompositionEvent()' in that specification.
Obsolete Initial definition.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) 9.0 (9.0) (Yes) No support ?
Feature Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? (Yes) 9.0 (9.0) ? ? ?

See also

Document Tags and Contributors

 Contributors to this page: chrisdavidmills
 Last updated by: chrisdavidmills,