The ServiceWorkerGlobalScope.onmessage event of the ServiceWorkerGlobalScope interface is called whenever incoming messages are received.
Note: Messages sent to 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.)
ServiceWorkerGlobalScope.onmessage = function(MessageEvent) { ... } self.addEventListener('message', function(messageEvent) {
console.log('Handling message event:', messageEvent);
}
| Specification | Status | Comment |
|---|---|---|
| Service Workers The definition of 'Event Handlers' in that specification. | Working Draft | Initial definition |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | 40 | ? | 44
|
No | 24 | 11.1 |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | 40 | 40 | ? | 44 | 24 | 11.1 | 4.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerGlobalScope/onmessage