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.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic support | Chrome Full support 1 | Edge Full support Yes | Firefox Full support 4 | IE Full support 9 | Opera ? | Safari Full support 10 | WebView Android ? | Chrome Android ? | Edge Mobile ? | Firefox Android ? | Opera Android ? | Safari iOS Full support 3 | Samsung Internet Android ? |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown
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,