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.