SpeechRecognitionResultList：length 属性
length 是 SpeechRecognitionResultList 接口的只读属性，它返回“数组”的长度，即列表中 SpeechRecognitionResult 对象的数量。
值
数字。
示例
此代码摘自我们的 语音颜色更改器 示例。
js
recognition.onresult = (event) => {
// The SpeechRecognitionEvent results property returns a SpeechRecognitionResultList object
// The SpeechRecognitionResultList object contains SpeechRecognitionResult objects.
// It has a getter so it can be accessed like an array
// The first [0] returns the SpeechRecognitionResult at position 0.
// Each SpeechRecognitionResult object contains SpeechRecognitionAlternative objects
// that contain individual results.
// These also have getters so they can be accessed like arrays.
// The second [0] returns the SpeechRecognitionAlternative at position 0.
// We then return the transcript property of the SpeechRecognitionAlternative object
const color = event.results[0][0].transcript;
diagnostic.textContent = `Result received: ${color}.`;
bg.style.backgroundColor = color;
console.log(event.results.length);
};
规范
| 规范 |
|---|
| Web 语音 API # dom-speechrecognitionresultlist-length |
浏览器兼容性
BCD 表格仅在启用 JavaScript 的浏览器中加载。