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EventSource: close() method

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

js

close()

Parameters

None.

Return value

None (undefined).

Examples

js

const button = document.querySelector("button");
const evtSource = new EventSource("sse.php");

button.onclick = () => {
  console.log("Connection closed");
  evtSource.close();
};

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
close 6 79 6 No 12 5 4.4 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/close