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

eventSource.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 Status Comment
HTML Living Standard
The definition of 'close()' in that specification.
Living Standard Initial definition

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support6 No6 No Yes5
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support618 No45125 ?

See also

Document Tags and Contributors

Contributors to this page: fscholz, chrisdavidmills
Last updated by: fscholz,