The lastEventId read-only property of the MessageEvent interface is a DOMString representing a unique ID for the event.
Syntax
var myId = messageEvent.lastEventId;
Value
A DOMString representing the ID.
Example
myWorker.onmessage = function(e) {
result.textContent = e.data;
console.log('Message received from worker');
console.log(e.lastEventId);
};
Specifications
| Specification | Status | Comment |
|---|---|---|
| Unknown The definition of 'lastEventId' in that specification. |
Unknown | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 1 | Yes | 4 | 9 | ? | 10 |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | ? | ? | ? | ? | ? | 3 | ? |
See also
ExtendableMessageEvent— similar to this interface but used in interfaces that needs to give more flexibility to authors.
Document Tags and Contributors
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Contributors to this page:
fscholz,
chrisdavidmills
Last updated by:
fscholz,