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

The resultIndex read-only property of the SpeechRecognitionEvent interface returns the lowest index value result in the SpeechRecognitionResultList "array" that has actually changed.

The SpeechRecognitionResultList object is not an array, but it has a getter that allows it to be accessed by array syntax.


A number.


recognition.onresult = function(event) {
  var color = event.results[0][0].transcript;
  diagnostic.textContent = 'Result received: ' + color + '.';
  bg.style.backgroundColor = color;
  console.log(event.resultIndex); // returns 0 if there is only one result


Web Speech API
# dom-speechrecognitionevent-resultindex

Browser compatibility

BCD tables only load in the browser

See also