MessageEvent.lastEventId
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 |
|---|---|---|
| HTML Living Standard The definition of 'MessageEvent: lastEventId' in that specification. |
Living Standard |
Browser compatibility
BCD tables only load in the browser
See also
ExtendableMessageEvent— similar to this interface but used in interfaces that needs to give more flexibility to authors.