This feature is not Baseline because it does not work in some of the most widely-used browsers.
The start() method of the Web Speech API starts the speech recognition service listening to incoming audio with intent to recognize grammars associated with the current SpeechRecognition.
start()
None.
None (undefined).
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;
const diagnostic = document.querySelector(".output");
const bg = document.querySelector("html");
document.body.onclick = () => {
recognition.start();
console.log("Ready to receive a color command.");
};
abortBtn.onclick = () => {
recognition.abort();
console.log("Speech recognition aborted.");
};
recognition.onspeechend = () => {
recognition.stop();
console.log("Speech recognition has stopped.");
};
| Specification |
|---|
| Web Speech API> # dom-speechrecognition-start> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
start |
33 | 79 | No | 20 | 14.1 | 33 | No | 20 | 14.5 | 2.0 | 4.4.3 | 14.5 |
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https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognition/start