EventSource.onmessage

The onmessage property of the EventSource interface is an EventHandler 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

Specification Status Comment
HTML Living Standard
The definition of 'onmessage' in that specification.
Living Standard Initial definition

Browser compatibility

BCD tables only load in the browser

See also