SpeechGrammar
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Web Speech API 的 SpeechGrammar
接口 表示了语音识别对象服务想要识别的一系列词语或模式。
文法通过 JSpeech Grammar Format (JSGF.) 来定义,其他格式的文法会在以后支持。
构造函数
SpeechGrammar.SpeechGrammar()
-
创建一个新的
SpeechGrammar
对象。
属性
SpeechGrammar.src
-
设置或返回
SpeechGrammar
对象实例中包含文法的字符串。 SpeechGrammar.weight
可选-
设置或返回
SpeechGrammar
对象的权重。
示例
js
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); // 应该返回和上面语法变量一样的内容
console.log(speechRecognitionList[0].weight); // 应该返回 1 - 与上面第四行所设置的权重一致
规范
Specification |
---|
Web Speech API # speechreco-speechgrammar |
浏览器兼容性
BCD tables only load in the browser