在此页

• 句法
• 范例
• 浏览器兼容性
• 另请参阅
• 相关话题

过时
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

emma 只读特性在 SpeechRecognitionEvent interface returns an E xtensible MultiModal Annotation markup language (EMMA) — XML — representation of the result.

注意 : EMMA is defined in the specification EMMA: Extensible MultiModal Annotation markup language . You can see muliple EMMA examples in the spec.

句法

var myEmma = event.emma;
					

值

A valid XML document. The exact contents can vary across user agents and recognition engines, but all supporting implementations will expose a valid XML document complete with an EMMA namespace. If the speech recognition system does not supply EMMA data then the user agent will return null .

范例

recognition.onresult = function(event) {
  var color = event.results[0][0].transcript;
  diagnostic.textContent = 'Result received: ' + color + '.';
  bg.style.backgroundColor = color;
  console.log(event.emma);
}
					

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
emma 弃用 非标	Chrome 33 Prefixed 33 Prefixed Prefixed Implemented with the vendor prefix: webkit You'll need to serve your code through a web server for recognition to work.	Edge ≤79 Prefixed ≤79 Prefixed Prefixed Implemented with the vendor prefix: webkit You'll need to serve your code through a web server for recognition to work.	Firefox No	IE No	Opera No	Safari No	WebView Android Yes Prefixed Yes Prefixed Prefixed Implemented with the vendor prefix: webkit You'll need to serve your code through a web server for recognition to work.	Chrome Android Yes Prefixed Yes Prefixed Prefixed Implemented with the vendor prefix: webkit You'll need to serve your code through a web server for recognition to work.	Firefox Android No	Opera Android No	Safari iOS No	Samsung Internet Android Yes Prefixed Yes Prefixed Prefixed Implemented with the vendor prefix: webkit You'll need to serve your code through a web server for recognition to work.

图例

完整支持

完整支持

不支持

不支持

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

非标。预期跨浏览器支持较差。

非标。预期跨浏览器支持较差。

弃用。不要用于新网站。

弃用。不要用于新网站。

见实现注意事项。

要求使用供应商前缀或不同名称。

要求使用供应商前缀或不同名称。

Firefox OS permissions

To use speech recognition in an app, you need to specify the following permissions in your manifest :

"permissions": {
  "audio-capture" : {
    "description" : "Audio capture"
  },
  "speech-recognition" : {
    "description" : "Speech recognition"
  }
}
										

You also need a privileged app, so you need to include this as well:

  "type": "privileged"
										

另请参阅

• Web 语音 API

元数据

• 最后修改： Jan 26, 2020

相关话题

1. SpeechRecognitionEvent
2. 特性

   1. emma
   2. interpretation
   3. resultIndex
   4. 结果
3. 继承：

   1. 事件
4. Related pages for Web Speech API

   1. SpeechGrammar
   2. SpeechGrammarList
   3. SpeechRecognition
   4. SpeechRecognitionAlternative
   5. SpeechRecognitionError
   6. SpeechRecognitionResult
   7. SpeechRecognitionResultList
   8. SpeechSynthesis
   9. SpeechSynthesisErrorEvent
   10. SpeechSynthesisEvent
   11. SpeechSynthesisUtterance
   12. SpeechSynthesisVoice