SpeechRecognition: nomatch event

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

The nomatch event of the Web Speech API is fired when the speech recognition service returns a final result with no significant recognition.

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

Bubbles No
Cancelable No
Interface SpeechRecognitionEvent
Event handler property onnomatch


You can use the nomatch event in an addEventListener method:

var recognition = new webkitSpeechRecognition() || new SpeechRecognition();

recognition.addEventListener('nomatch', function() {
  console.log('Speech not recognized');

Or use the onnomatch event handler property:

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


Web Speech API
# eventdef-speechrecognition-nomatch

Browser compatibility

BCD tables only load in the browser

See also