Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The onmessage property of the ServiceWorkerContainer interface is an event handler fired whenever a message event occurs — when incoming messages are received to the ServiceWorkerContainer object (e.g., via a Client.postMessage() call).
Note: Messages received from service worker contexts (e.g. as the event object of onmessage) are represented by MessageEvent objects in modern browsers, for consistency with other web messaging features. (They used to be represented by ServiceWorkerMessageEvent objects, which have now been deprecated.)
serviceWorkerContainer.onmessage = function(messageevent) { ... }
navigator.serviceWorker.onmessage = function(messageevent) { console.log(`received data: ${messageevent.data}`); }
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onmessage |
40 |
17 |
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
|
No |
27 |
11.1 |
40 |
40 |
44 |
27 |
11.3 |
4.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerContainer/onmessage