SpeechGrammar
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
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.
Constructor
SpeechGrammar()Non-standard Experimental-
Creates a new
SpeechGrammarobject.
Instance properties
SpeechGrammar.srcExperimental-
Sets and returns a string containing the grammar from within in the
SpeechGrammarobject instance. SpeechGrammar.weightOptional Experimental-
Sets and returns the weight of the
SpeechGrammarobject.
Examples
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 addFromString.
Specifications
| Specification |
|---|
| Web Speech API # speechreco-speechgrammar |
Browser compatibility
| desktop | mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SpeechGrammar | ||||||||||||
SpeechGrammar() constructor | ||||||||||||
src | ||||||||||||
weight | ||||||||||||