Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The onspeechstart property of the SpeechRecognition interface represents an event handler that will run when sound recognized by the speech recognition service as speech has been detected (when the speechstart event fires.)
mySpeechRecognition.onspeechstart = function() { ... };
recognition.onspeechstart = function() { console.log('Speech has been detected'); }
| Specification |
|---|
| Web Speech API # dom-speechrecognition-onspeechstart |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onspeechstart |
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/onspeechstart