The open
event of the EventSource
API is fired when a connection with an event source is opened.
Bubbles | No |
---|---|
Cancelable | No |
Interface | Event |
Event handler property | EventSource.onopen |
Examples
var 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.");
};
Specifications
Specification | Status |
---|---|
HTML Living Standard The definition of 'open event' in that specification. |
Living Standard |
Browser compatibility
BCD tables only load in the browser