The CloseEvent() constructor creates a new CloseEvent.


event = new CloseEvent(typeArg, closeEventInit);


Is a DOMString representing the name of the event.
Is a CloseEventInit dictionary, having the following fields:
  • "wasClean", optional and defaulting to false, of type long, indicates if the connection has been closed cleanly or not.
  • "code", optional and defaulting to 0, of type unsigned short, that is the connection close code sent by the server.
  • "reason", optional and defaulting to '', of type DOMString,  that is a human-readable reason why the server closed the connection.

The CloseEventInit dictionary also accepts fields from the EventInit dictionary.


Specification Status Comment
WHATWG HTML Living Standard
The definition of 'CloseEvent()' in that specification.
Living Standard Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support ? 8 (8) ? ? ?
Support in Web workers ? (Yes) ? ? ?
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? 8.0 (8) ? ? ?
Support in Web workers ? ? (Yes) ? ? ?

See also

  • CloseEvent, the interface of the objects it constructs.


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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API CloseEvent Constructor Reference Référence