ExtendableEvent: ExtendableEvent() constructor

Note: This feature is only available in Service Workers.

The ExtendableEvent() constructor creates a new ExtendableEvent object.

Syntax

js
new ExtendableEvent(type)
new ExtendableEvent(type, options)

Parameters

type

A string with the name of the event. It is case-sensitive.

options Optional

An object that, in addition of the properties defined in Event(), can contain any custom settings that you want to apply to the event object. Currently no possible options are mandatory, but this has been defined for forward compatibility across the different derived events.

Return value

A new ExtendableEvent object.

Specifications

Specification
Service Workers
# dom-extendableevent-extendableevent

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
ExtendableEvent() constructor

See also