This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The start
event of the Web Speech API SpeechRecognition
object is fired when the speech recognition service has begun listening to incoming audio with intent to recognize grammars associated with the current SpeechRecognition
.
Bubbles | No |
---|---|
Cancelable | No |
Interface | Event |
Event handler property | onstart |
Examples
You can use the start
event in an addEventListener
method:
var recognition = new webkitSpeechRecognition() || new SpeechRecognition(); recognition.addEventListener('start', function() { console.log('Speech recognition service has started'); });
Or use the onstart
event handler property:
recognition.onstart = function() { console.log('Speech recognition service has started'); }
Specifications
Specification | Status | Comment |
---|---|---|
Web Speech API The definition of 'speech recognition events' in that specification. |
Draft |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
start event | Chrome Full support 33 | Edge Full support 79 | Firefox No support No | IE No support No | Opera No support No | Safari No support No | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android No support No | Opera Android No support No | Safari iOS No support No | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.