Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The SpeechGrammar interface of the Web Speech API represents a set of words or patterns of words that we want the recognition service to recognize.
Grammar is defined using JSpeech Grammar Format (JSGF.) Other formats may also be supported in the future.
SpeechGrammar() Non-standard Experimental
Creates a new SpeechGrammar object.
SpeechGrammar.src Experimental
Sets and returns a string containing the grammar from within in the SpeechGrammar object instance.
SpeechGrammar.weight Optional Experimental
Sets and returns the weight of the SpeechGrammar object.
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;
console.log(speechRecognitionList[0].src); // should return the same as the contents of the grammar variable
console.log(speechRecognitionList[0].weight); // should return 1 - the same as the weight set in line 4.
| Specification |
|---|
| Web Speech API # speechreco-speechgrammar |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
SpeechGrammar |
25 | 79 |
44Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. |
No | 27 | No | No | 25 | No | No | No | 1.5 |
SpeechGrammar |
25 | 79 |
44Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. |
No | 27 | No | No | 25 | No | No | No | 1.5 |
src |
25 | 79 |
44Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. |
No | 27 | No | No | 25 | No | No | No | 1.5 |
weight |
25 | 79 |
44Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. |
No | 27 | No | No | 25 | No | No | No | 1.5 |
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https://developer.mozilla.org/en-US/docs/Web/API/SpeechGrammar