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ServiceWorkerContainer.onmessage

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 MessagePort.postMessage() call).

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.)

Syntax

ServiceWorkerContainer.onmessage = function(messageevent) { ... }

Example

// TBD

Specifications

Specification	Status	Comment
Service Workers The definition of 'ServiceWorkerContainer: onmessage' in that specification.	Working Draft	Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	40	17 17 16 Disabled Disabled From version 16: this feature is behind the `Enable service workers` preference.	44 44 Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR).	No	27	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	27	11.1	4.0

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https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerContainer/onmessage