The interimResults property of the SpeechRecognition interface controls whether interim results should be returned (true) or not (false.) Interim results are results that are not yet final (e.g. the SpeechRecognitionResult.isFinal property is false.)
The default value for interimResults is false.
A boolean value representing the state of the current SpeechRecognition's interim results. true means interim results are returned, and false means they aren't.
This code is excerpted from our Speech color changer example.
js
const grammar = "#JSGF V1.0; grammar colors; public <color> = aqua | azure | beige | bisque | black | blue | brown | chocolate | coral | crimson | cyan | fuchsia | ghostwhite | gold | goldenrod | gray | green | indigo | ivory | khaki | lavender | lime | linen | magenta | maroon | moccasin | navy | olive | orange | orchid | peru | pink | plum | purple | red | salmon | sienna | silver | snow | tan | teal | thistle | tomato | turquoise | violet | white | yellow ;"; const recognition = new SpeechRecognition(); const speechRecognitionList = new SpeechGrammarList(); speechRecognitionList.addFromString(grammar, 1); recognition.grammars = speechRecognitionList; //recognition.continuous = false; recognition.lang = "en-US"; recognition.interimResults = false; recognition.maxAlternatives = 1; // ...
| Specification |
|---|
| Web Speech API # dom-speechrecognition-interimresults |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
interimResults |
33 | 79 | No | No | 20 | 14.1 | 4.4.3 | 33 | No | 20 | 14.5 | 2.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognition/interimResults