SpeechGrammar：weight 属性

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

实验性: 这是一项实验性技术
在将其用于生产之前，请仔细检查浏览器兼容性表格。

SpeechGrammar 接口的 weight 可选属性用于设置和返回 SpeechGrammar 对象的权重。

值

表示语法权重的浮点数，范围为 0.0 到 1.0。

示例

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); // 返回值应与语法变量的内容相同
console.log(speechRecognitionList[0].weight); // 应返回 1——与 addFromString 中设置的权重相同。

规范

Specification
Web Speech API
# dom-speechgrammar-weight

浏览器兼容性

BCD tables only load in the browser

参见