EventSource.onerror

The onerror property of the EventSource interface is an EventHandler called when an error occurs and the error event is dispatched on an EventSource object.

Syntax

eventSource.onerror = function

Examples

evtSource.onerror = function() {
  console.log("EventSource failed.");
};

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 'onerror' in that specification.
Living Standard Initial definition

Browser compatibility

BCD tables only load in the browser

See also