Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The optional weight property of the SpeechGrammar interface sets and returns the weight of the SpeechGrammar object.
A float representing the weight of the grammar, in the range 0.0–1.0.
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 # dom-speechgrammar-weight |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
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/weight