This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The Extendable
MessageEvent()
constructor creates a new ExtendableMessageEvent
object instance.
var myEME = new ExtendableMessageEvent(type, init);
DOMString
that defines the type of the message event being created.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 Client
, ServiceWorker
or MessagePort
that sent the message.ports
: An array containing the MessagePort
objects connected to the channel sending the message.var init = { data : 'hello message', source : MessagePortReference, ports : MessagePortListReference } var myEME = new ExtendableMessageEvent('message', init);
Specification | Status | Comment |
---|---|---|
Service Workers The definition of 'ExtendableMessageEvent' in that specification. | Editor's Draft | Initial definition. |
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | (Yes) | 45.0 (45.0)[1] | No support | ? | No support |
init option | 51.0 | ? | ? | ? | ? |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|---|
Basic support | No support | No support | (Yes) | (Yes) | No support | ? | No support | (Yes) |
init option | No support | No support | ? | ? | ? | ? | ? | 51.0 |
[1] Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ExtendableMessageEvent/ExtendableMessageEvent