SpeechRecognition.onnomatch

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The onnomatch property of the SpeechRecognition interface represents an event handler that will run when the speech recognition service returns a final result with no significant recognition (when the nomatch event fires.)

This may involve some degree of recognition, which doesn't meet or exceed the confidence threshold.

Note: The onnomatch handler does not yet work properly in Firefox — the speech recognition system always returns a positive match, and then guesses at what item in the grammar it found. This is being worked on.

Syntax

mySpeechRecognition.onnomatch = function() { ... };

Examples

var recognition = new SpeechRecognition();

recognition.onnomatch = function() {
  console.log('Speech not recognized');
}

Specifications

Specification
Web Speech API
# dom-speechrecognition-onnomatch

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
onnomatch
33
≤79
No
No
No
14.1
Yes
Yes
No
No
14.5
Yes

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognition/onnomatch