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EventSource.close()

The close() method of the EventSource interface closes the connection, if one is made, and sets the EventSource.readyState attribute to 2 (closed).

Note: If the connection is already closed, the method does nothing.

Syntax

close()

Parameters

None.

Return value

Void.

Examples

var button = document.querySelector('button');
var evtSource = new EventSource('sse.php');

button.onclick = function() {
  console.log('Connection closed');
  evtSource.close();
}

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

Specifications

Specification
HTML Standard # dom-eventsource-close-dev

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
`close`	6	79	6	No	12	5	4.4	18	45	12	5	1.0