语音识别：maxAlternatives 属性
maxAlternatives 是 SpeechRecognition 接口的一个属性，它设置每个 SpeechRecognitionResult 提供的 SpeechRecognitionAlternative 的最大数量。
默认值为 1。
值
一个数字，表示每个结果返回的最大备选方案数量。
示例
此代码摘录自我们的 语音颜色更改器 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;
//recognition.continuous = false;
recognition.lang = "en-US";
recognition.interimResults = false;
recognition.maxAlternatives = 1;
// ...
规范
| 规范 |
|---|
| Web 语音 API # dom-speechrecognition-maxalternatives |
浏览器兼容性
BCD 表格仅在启用 JavaScript 的浏览器中加载。