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.
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
};
| Specification |
|---|
| Web Speech API # dom-speechrecognitionevent-resultindex |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
resultIndex |
33 | 79 | No | No | No | 14.1 | 4.4.3 | 33 | No | No | 14.5 | 2.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognitionEvent/resultIndex