EventSource: close() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
Note: This feature is available in Web Workers.
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
| Specification |
|---|
| HTML # dom-eventsource-close-dev |