SpeechGrammar.weight

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规范
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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。

可选 weight 特性为 SpeechGrammar interface sets and returns the weight of the SpeechGrammar 对象。

句法

var myGrammarWeight = speechGrammarInstance.weight;

值

A float representing the weight of the grammar, in the range 0.0–1.0.

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 'weight' 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
`weight`	Chrome 25	Edge 79	Firefox 44 Disabled 44 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 No	Opera 27	Safari No	WebView Android No	Chrome Android 64	Firefox Android No	Opera Android No	Safari iOS 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。

另请参阅

Web 语音 API

元数据

最后修改： 2020 年 1 月 22 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