SpeechGrammar

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(): Creates a new SpeechGrammar object.

Properties

SpeechGrammar.src: Sets and returns a string containing the grammar from within in the SpeechGrammar object instance.
SpeechGrammar.weight Optional: Sets and returns the weight of the SpeechGrammar object.

Examples

var 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 ;'
var recognition = new SpeechRecognition();
var 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.

Specifications

Specification
Web Speech API # speechreco-speechgrammar

Browser compatibility

	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	44 Note 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	64	No	No	No	9.0
`SpeechGrammar`	25	79	44 Note 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	64	No	No	No	9.0
`src`	25	79	44 Note 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	64	No	No	No	9.0
`weight`	25	79	44 Note 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	64	No	No	No	9.0