Window.speechSynthesis

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句法
范例
规范
浏览器兼容性
另请参阅
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这是实验性技术
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speechSynthesis read-only property of the Window object returns a SpeechSynthesis 对象，其是入口点为使用 Web 语音 API 语音合成功能。

句法

var synth = window.speechSynthesis;

值

A SpeechSynthesis 对象。

范例

In our basic Speech synthesiser demo , we first grab a reference to the SpeechSynthesis controller using window.speechSynthesis . After defining some necessary variables, we retrieve a list of the voices available using SpeechSynthesis.getVoices() and populate a select menu with them so the user can choose what voice they want.

Inside the inputForm.onsubmit handler, we stop the form submitting with preventDefault() , create a new SpeechSynthesisUtterance instance containing the text from the text <input> , set the utterance's voice to the voice selected in the <select> element, and start the utterance speaking via the SpeechSynthesis.speak() 方法。

var synth = window.speechSynthesis;
var inputForm = document.querySelector('form');
var inputTxt = document.querySelector('input');
var voiceSelect = document.querySelector('select');
function populateVoiceList() {
  voices = synth.getVoices();
  for(i = 0; i < voices.length ; i++) {
    var option = document.createElement('option');
    option.textContent = voices[i].name + ' (' + voices[i].lang + ')';
    if(voices[i].default) {
      option.textContent += ' -- DEFAULT';
    }
    option.setAttribute('data-lang', voices[i].lang);
    option.setAttribute('data-name', voices[i].name);
    voiceSelect.appendChild(option);
  }
}
populateVoiceList();
if (speechSynthesis.onvoiceschanged !== undefined) {
  speechSynthesis.onvoiceschanged = populateVoiceList;
}
inputForm.onsubmit = function(event) {
  event.preventDefault();
  var utterThis = new SpeechSynthesisUtterance(inputTxt.value);
  var selectedOption = voiceSelect.selectedOptions[0].getAttribute('data-name');
  for(i = 0; i < voices.length ; i++) {
    if(voices[i].name === selectedOption) {
      utterThis.voice = voices[i];
    }
  }
  synth.speak(utterThis);
  inputTxt.blur();
}

规范

规范	状态	注释
Web 语音 API The definition of 'SpeechSynthesis' in that specification.	草案

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`speechSynthesis`	Chrome 33	Edge 14	Firefox 49	IE No	Opera Yes	Safari 7	WebView Android 37	Chrome Android Yes	Firefox Android No	Opera Android No	Safari iOS 7	Samsung Internet Android Yes

图例

完整支持
不支持

另请参阅

Web 语音 API

元数据

最后修改： 2019 年 3 月 23 日

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句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题