This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The origin read-only property of the ExtendableMessageEvent
interface returns the origin of the ServiceWorkerClient
that sent the message.
var myOrigin = ExtendableMessageEventInstance.origin;
A DOMString
.
When the following code is used inside a service worker to respond to a push messages by sending the data received via PushMessageData
to the main context via a channel message, the event object of onmessage
will be a ExtendableMessageEvent
.
var port; self.addEventListener('push', function(e) { var obj = e.data.json(); if(obj.action === 'subscribe' || obj.action === 'unsubscribe') { port.postMessage(obj); } else if(obj.action === 'init' || obj.action === 'chatMsg') { port.postMessage(obj); } }); self.onmessage = function(e) { console.log(e.origin); port = e.ports[0]; }
Specification | Status | Comment |
---|---|---|
Service Workers The definition of 'ExtendableMessageEvent.origin' in that specification. | Editor's Draft | Initial definition. |
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | ? | 45.0 (45.0)[1] | No support | ? | No support |
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 | ? |
[1] Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)
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https://developer.mozilla.org/en-US/docs/Web/API/ExtendableMessageEvent/origin