EventSource.onmessage

The onmessage property of the EventSource interface is an event handler called when a message event is received, that is when a message is coming from the source.

Event objects of onmessage event handlers are of type MessageEvent.

Syntax

eventSource.onmessage = function

Examples

evtSource.onmessage = function(e) {
  var newElement = document.createElement("li");

  newElement.textContent = "message: " + e.data;
  eventList.appendChild(newElement);
}

Note: You can find a full example on GitHub — see Simple SSE demo using PHP.

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
onmessage
6
79
6
No
Yes
5
≤37
18
45
12
5
1.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/EventSource/onmessage