The open
event of the EventSource
API is fired when a connection with an event source is opened.
This event is not cancelable and does not bubble.
The open
event of the EventSource
API is fired when a connection with an event source is opened.
This event is not cancelable and does not bubble.
Use the event name in methods like addEventListener()
, or set an event handler property.
js
addEventListener("open", (event) => {}); onopen = (event) => {};
A generic Event
.
js
const evtSource = new EventSource("sse.php"); // addEventListener version evtSource.addEventListener("open", (e) => { console.log("The connection has been established."); }); // onopen version evtSource.onopen = (e) => { console.log("The connection has been established."); };
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
open_event |
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/open_event