SpeechSynthesis: voiceschanged event

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这是实验性技术
检查浏览器兼容性表格要小心谨慎在生产中使用这之前。

voiceschanged event of the Web 语音 API is fired when the list of SpeechSynthesisVoice objects that would be returned by the SpeechSynthesis.getVoices() method has changed (when the voiceschanged event fires.)

冒泡	No
可取消	No
接口	`事件`
事件处理程序特性	`onvoiceschanged`

范例

This could be used to repopulate a list of voices that the user can choose between when the event fires. You can use the voiceschanged event in an addEventListener 方法：

var synth = window.speechSynthesis;
synth.addEventListener('voiceschanged', function() {
  var voices = synth.getVoices();
  for(i = 0; i < voices.length ; i++) {
    var option = document.createElement('option');
    option.textContent = voices[i].name + ' (' + voices[i].lang + ')';
    option.setAttribute('data-lang', voices[i].lang);
    option.setAttribute('data-name', voices[i].name);
    voiceSelect.appendChild(option);
  }
});

或使用 onvoiceschanged 事件处理程序特性：

synth.onvoiceschanged = function() {
  var voices = synth.getVoices();
  for(i = 0; i < voices.length ; i++) {
    var option = document.createElement('option');
    option.textContent = voices[i].name + ' (' + voices[i].lang + ')';
    option.setAttribute('data-lang', voices[i].lang);
    option.setAttribute('data-name', voices[i].name);
    voiceSelect.appendChild(option);
  }
}

规范

规范	状态	注释
Web 语音 API The definition of 'speech synthesis events' 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
`voiceschanged` event	Chrome 33	Edge 14	Firefox 49	IE 不支持 No	Opera 21	Safari 7	WebView Android 4.4.3	Chrome Android 33	Firefox Android 62	Opera Android 不支持 No	Safari iOS 7	Samsung Internet Android 3.0

图例

完整支持
不支持
实验。期望将来行为有所改变。
用户必须明确启用此特征。

另请参阅

Web 语音 API

元数据

最后修改： Mar 18, 2019

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