SpeechGrammar

这是 实验性技术
检查 浏览器兼容性表格 在生产中使用这之前。

SpeechGrammar interface of the 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 object instance.
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 Comment
Web 语音 API
The definition of 'SpeechGrammar' in that specification.
草案

浏览器兼容性

更新 GitHub 上的兼容性数据
Desktop Mobile
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 From version 44: this feature is behind the media.webspeech.recognition.enable preference (needs to be set to true ). 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 From version 44: this feature is behind the media.webspeech.recognition.enable preference (needs to be set to true ). 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 From version 44: this feature is behind the media.webspeech.recognition.enable preference (needs to be set to true ). 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 From version 44: this feature is behind the media.webspeech.recognition.enable preference (needs to be set to true ). 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
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。
见实现注意事项。
用户必须明确启用此特征。
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。
要求使用供应商前缀或不同名称。

另请参阅