ServiceWorkerMessageEvent.ServiceWorkerMessageEvent()

Deprecated
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.

Important: In modern browsers, this property has been deprecated. Service worker messages will now use the MessageEvent interface, for consistency with other web messaging features.

The ServiceWorkerMessageEvent() constructor creates a new ServiceWorkerMessageEvent object instance.

Syntax

var mySWME = new ServiceWorkerMessageEvent(type, init);

Parameters

type
A DOMString that defines the type of the message event being created.
init Optional
An initialisation object, which should contain the following parameters:
  • data: The event's data — this can be any type.
  • origin: A DOMString that defines the origin of the corresponding service worker's environment settings object.
  • lastEventId: A DOMString that defines the last event ID of the event source.
  • source: The ServiceWorker or MessagePort that sent the message.
  • ports: An array containing the MessagePort objects connected to the channel sending the message.

Examples

var init = {
             data : 'hello message',
             source : MessagePortReference,
             ports : MessagePortListReference
           }

var mySWME = new ServiceWorkerMessageEvent('message', init);

Specifications

Specification Status Comment
Service Workers
The definition of 'ServiceWorkerMessageEvent' in that specification.
Working Draft Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support45

161

17

44 — 552 3 No24 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support No45 ?44 — 5524 No4.0

1. From version 16: this feature is behind the Enable service workers preference.

2. Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR).

3. In Firefox 55 and later, the standard MessageEvent interface must be used instead.

See also

Document Tags and Contributors

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