SpeechSynthesisUtterance: start event
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2018.
The start event of the Web Speech API SpeechSynthesisUtterance object is fired when the utterance has begun to be spoken.
Syntax
Use the event name in addEventListener():
js
addEventListener("start", (event) => { })
Alternatively, assign to the event handler property of the interface:
js
onstart = (event) => { }
Event type
A SpeechSynthesisEvent. Inherits from Event.
Examples
You can use the start event in an addEventListener method:
js
utterThis.addEventListener("start", (event) => {
console.log(`We have started uttering this speech: ${event.utterance.text}`);
});
Or use the onstart event handler property (but note that this replaces other event listeners added using onstart, if any):
js
utterThis.onstart = (event) => {
console.log(`We have started uttering this speech: ${event.utterance.text}`);
};
Specifications
| Specification |
|---|
| Web Speech API # eventdef-speechsynthesisutterance-start |
| Web Speech API # dom-speechsynthesisutterance-onstart |