Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The onstart property of the SpeechRecognition interface represents an event handler that will run when the speech recognition service has begun listening to incoming audio with intent to recognize grammars associated with the current SpeechRecognition (when the start event fires.)
mySpeechRecognition.onstart = function() { ... };
recognition.onstart = function() { console.log('Speech recognition service has started'); }
| Specification |
|---|
| Web Speech API # dom-speechrecognition-onstart |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onstart |
33 |
79 |
No |
No |
No |
14.1 |
4.4.3 |
33 |
No |
No |
14.5 |
2.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognition/onstart