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ExtendableEvent.constructor

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The ExtendableEvent() constructor creates a new ExtendableEvent object.

Syntax

var myExtendableEvent = new ExtendableEvent(type, init);

Parameters

type
The type of the ExtendableEvent, for example install, activate.
init Optional
An options object containing any custom settings that you want to apply to the event object. Currently no possible options exist inside the spec, but this has been defined for forward compatibility across the different derived events.

Specifications

Specification Status Comment
Service Workers
The definition of 'ExtendableEvent' in that specification.		 Editor's Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 40.0 44.0 (44.0)[1] No support 24 No support
Feature Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support ? 44.0 (44.0) (Yes) No support ? No support ?

[1] Service workers (and Push) have been disabled in the Firefox 45 & 52 Extended Support Releases (ESR.)

See also

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https://developer.mozilla.org/en-US/docs/Web/API/ExtendableEvent/ExtendableEvent