SpeechRecognitionResult

Limited availability

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

The SpeechRecognitionResult interface of the Web Speech API represents a single recognition match, which may contain multiple SpeechRecognitionAlternative objects.

Instance properties

SpeechRecognitionResult.isFinal Read only

A boolean value that states whether this result is final (true) or not (false) — if so, then this is the final time this result will be returned; if not, then this result is an interim result, and may be updated later on.

SpeechRecognitionResult.length Read only

Returns the length of the "array" — the number of SpeechRecognitionAlternative objects contained in the result (also referred to as "n-best alternatives".)

Instance methods

SpeechRecognitionResult.item

A standard getter that allows SpeechRecognitionAlternative objects within the result to be accessed via array syntax.

Examples

This code is excerpted from our Speech color changer example.

js
recognition.onresult = (event) => {
  const color = event.results[0][0].transcript;
  diagnostic.textContent = `Result received: ${color}.`;
  bg.style.backgroundColor = color;
};

Specifications

Specification
Web Speech API
# speechreco-result

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
SpeechRecognitionResult
Chrome – Full support
Chrome 33 (Release date: 2014-02-20)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – No support
Opera
footnote No support
Safari – Full support
Safari 14.1 (Release date: 2021-04-26)
footnote Full support
Chrome Android – Full support
Chrome Android 33 (Release date: 2014-02-26)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – Full support
Safari on iOS 14.5 (Release date: 2021-04-26)
footnote Full support
Samsung Internet – Full support
Samsung Internet 2 (Release date: 2014-10-17)
footnote Full support
WebView Android – Full support
WebView Android 4.4.3 (Release date: 2014-06-02)
footnote Full support
WebView on iOS – Full support
WebView on iOS 14.5 (Release date: 2021-04-26)
footnote Full support
isFinal
Chrome – Full support
Chrome 33 (Release date: 2014-02-20)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – No support
Opera
footnote No support
Safari – Full support
Safari 14.1 (Release date: 2021-04-26)
footnote Full support
Chrome Android – Full support
Chrome Android 33 (Release date: 2014-02-26)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – Full support
Safari on iOS 14.5 (Release date: 2021-04-26)
footnote Full support
Samsung Internet – Full support
Samsung Internet 2 (Release date: 2014-10-17)
footnote Full support
WebView Android – Full support
WebView Android 4.4.3 (Release date: 2014-06-02)
footnote Full support
WebView on iOS – Full support
WebView on iOS 14.5 (Release date: 2021-04-26)
footnote Full support
item
Chrome – Full support
Chrome 33 (Release date: 2014-02-20)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – No support
Opera
footnote No support
Safari – Full support
Safari 14.1 (Release date: 2021-04-26)
footnote Full support
Chrome Android – Full support
Chrome Android 33 (Release date: 2014-02-26)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – Full support
Safari on iOS 14.5 (Release date: 2021-04-26)
footnote Full support
Samsung Internet – Full support
Samsung Internet 2 (Release date: 2014-10-17)
footnote Full support
WebView Android – Full support
WebView Android 4.4.3 (Release date: 2014-06-02)
footnote Full support
WebView on iOS – Full support
WebView on iOS 14.5 (Release date: 2021-04-26)
footnote Full support
length
Chrome – Full support
Chrome 33 (Release date: 2014-02-20)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – No support
Firefox
footnote No support
Opera – No support
Opera
footnote No support
Safari – Full support
Safari 14.1 (Release date: 2021-04-26)
footnote Full support
Chrome Android – Full support
Chrome Android 33 (Release date: 2014-02-26)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – Full support
Safari on iOS 14.5 (Release date: 2021-04-26)
footnote Full support
Samsung Internet – Full support
Samsung Internet 2 (Release date: 2014-10-17)
footnote Full support
WebView Android – Full support
WebView Android 4.4.3 (Release date: 2014-06-02)
footnote Full support
WebView on iOS – Full support
WebView on iOS 14.5 (Release date: 2021-04-26)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support

See also