The readyState read-only property of the EventSource interface returns a number representing the state of the connection.
The readyState read-only property of the EventSource interface returns a number representing the state of the connection.
A number representing the state of the connection. Possible values are:
0 — connecting1 — open2 — closedjs
const evtSource = new EventSource("sse.php"); console.log(evtSource.readyState);
Note: You can find a full example on GitHub — see Simple SSE demo using PHP.
| Specification |
|---|
| HTML Standard # dom-eventsource-readystate-dev |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
readyState |
6 | 79 | 6 | No | 12 | 5 | 4.4 | 18 | 45 | 12 | 5 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/EventSource/readyState