SpeechGrammar | Web API

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构造函数
特性
范例
规范
浏览器兼容性
另请参阅
相关话题

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。

SpeechGrammar 接口在 Web 语音 API represents a set of words or patterns of words that we want the recognition service to recognize.

Grammar is defined using JSpeech Grammar Format ( JSGF .) Other formats may also be supported in the future.

构造函数

SpeechGrammar.SpeechGrammar(): 创建新的 SpeechGrammar 对象。

特性

SpeechGrammar.src: Sets and returns a string containing the grammar from within in the SpeechGrammar 对象实例。
SpeechGrammar.weight 可选: Sets and returns the weight of the SpeechGrammar 对象。

范例

var 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 ;'
var recognition = new SpeechRecognition();
var speechRecognitionList = new SpeechGrammarList();
speechRecognitionList.addFromString(grammar, 1);
recognition.grammars = speechRecognitionList;
console.log(speechRecognitionList[0].src); // should return the same as the contents of the grammar variable
console.log(speechRecognitionList[0].weight); // should return 1 - the same as the weight set in line 4.

规范

规范	状态	注释
Web 语音 API The definition of 'SpeechGrammar' 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
`SpeechGrammar`	Chrome 25 Prefixed 25 Prefixed Prefixed Implemented with the vendor prefix: webkit	Edge 79 Prefixed 79 Prefixed Prefixed Implemented with the vendor prefix: webkit	Firefox 44 注意事项 Disabled 44 注意事项 Disabled Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. Disabled ). To change preferences in Firefox, visit about:config.	IE 不支持 No	Opera 27	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 64 Prefixed 64 Prefixed Prefixed Implemented with the vendor prefix: webkit	Firefox Android 不支持 No	Opera Android 不支持 No	Safari iOS 不支持 No	Samsung Internet Android 9.0 Prefixed 9.0 Prefixed Prefixed Implemented with the vendor prefix: webkit
`SpeechGrammar()` 构造函数	Chrome 25 Prefixed 25 Prefixed Prefixed Implemented with the vendor prefix: webkit	Edge 79 Prefixed 79 Prefixed Prefixed Implemented with the vendor prefix: webkit	Firefox 44 注意事项 Disabled 44 注意事项 Disabled Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. Disabled ). To change preferences in Firefox, visit about:config.	IE 不支持 No	Opera 27	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 64 Prefixed 64 Prefixed Prefixed Implemented with the vendor prefix: webkit	Firefox Android 不支持 No	Opera Android 不支持 No	Safari iOS 不支持 No	Samsung Internet Android 9.0 Prefixed 9.0 Prefixed Prefixed Implemented with the vendor prefix: webkit
`src`	Chrome 25	Edge 79	Firefox 44 注意事项 Disabled 44 注意事项 Disabled Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. Disabled ). To change preferences in Firefox, visit about:config.	IE 不支持 No	Opera 27	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 64	Firefox Android 不支持 No	Opera Android 不支持 No	Safari iOS 不支持 No	Samsung Internet Android 9.0
`weight`	Chrome 25	Edge 79	Firefox 44 注意事项 Disabled 44 注意事项 Disabled Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out. Disabled ). To change preferences in Firefox, visit about:config.	IE 不支持 No	Opera 27	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 64	Firefox Android 不支持 No	Opera Android 不支持 No	Safari iOS 不支持 No	Samsung Internet Android 9.0

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。
要求使用供应商前缀或不同名称。

另请参阅

Web 语音 API

元数据

最后修改： 2019 年 3 月 23 日

在此页

构造函数

特性

范例

规范

浏览器兼容性

图例

另请参阅

相关话题