SpeechRecognitionEvent: resultIndex property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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.

Value

A number.

Examples

js
recognition.onresult = (event) => {
  const 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
};

Specifications

Specification
Web Speech API
# dom-speechrecognitionevent-resultindex

Browser compatibility

BCD tables only load in the browser

See also