Deprecated
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. 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 origin read-only property of the ServiceWorkerMessageEvent
interface returns the origin of the service worker's environment settings object.
Syntax
var myOrigin = ServiceWorkerMessageEventInstance.origin;
Value
A DOMString
.
Examples
When the following code is used inside the main thread to set up a message channel between it and a service worker for sending messages between the two, the event object of onmessage
will be a ServiceWorkerMessageEvent
.
navigator.serviceWorker.ready.then(function(reg) { ... // set up a message channel to communicate with the SW var channel = new MessageChannel(); channel.port1.onmessage = function(e) { console.log(e.origin); handleChannelMessage(e.data); } mySW = reg.active; mySW.postMessage('hello', [channel.port2]); });
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
origin | Chrome Full support 45 | Edge
Full support
17
| Firefox
No support
44 — 55
| IE No support No | Opera Full support 24 | Safari No support No | WebView Android No support No | Chrome Android Full support 45 | Firefox Android No support 44 — 55 | Opera Android Full support 24 | Safari iOS No support No | Samsung Internet Android Full support 4.0 |
Legend
- Full support
- Full support
- No support
- No support
- Deprecated. Not for use in new websites.
- Deprecated. Not for use in new websites.
- See implementation notes.
- See implementation notes.
- User must explicitly enable this feature.
- User must explicitly enable this feature.