CountQueuingStrategy

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构造函数
特性
方法
范例
规范
浏览器兼容性
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。

CountQueuingStrategy 接口的 Streams API provides a built-in chunk counting queuing strategy that can be used when constructing streams.

构造函数

CountQueuingStrategy(): 创建新的 CountQueuingStrategy 对象实例。

特性

None.

方法

CountQueuingStrategy.size(): 返回 1 .

范例

const queueingStrategy = new CountQueuingStrategy({ highWaterMark: 1 });
const writableStream = new WritableStream({
  // Implement the sink
  write(chunk) {
    ...
  },
  close() {
    ...
  },
  abort(err) {
    console.log("Sink error:", err);
  }
}, queueingStrategy);
var size = queueingStrategy.size();

规范

规范	状态	注释
流 The definition of 'CountQueuingStrategy' in that specification.	实时标准	初始定义。

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
`CountQueuingStrategy`	Chrome 59	Edge 16	Firefox 57 Disabled 57 Disabled Disabled From version 57: this feature is behind the `dom.streams.enabled` preference (needs to be set to `true` ) 和 preference (needs to be set to ). To change preferences in Firefox, visit about:config.	IE 不支持 No	Opera 46	Safari ?	WebView Android 59	Chrome Android 59	Firefox Android 57 Disabled 57 Disabled Disabled From version 57: this feature is behind the `dom.streams.enabled` preference (needs to be set to `true` ) 和 preference (needs to be set to ). To change preferences in Firefox, visit about:config.	Opera Android 43	Safari iOS ?	Samsung Internet Android 7.0
`CountQueuingStrategy()` 构造函数	Chrome 59	Edge 16	Firefox 57 Disabled 57 Disabled Disabled From version 57: this feature is behind the `dom.streams.enabled` preference (needs to be set to `true` ) 和 preference (needs to be set to ). To change preferences in Firefox, visit about:config.	IE 不支持 No	Opera 46	Safari ?	WebView Android 59	Chrome Android 59	Firefox Android 57 Disabled 57 Disabled Disabled From version 57: this feature is behind the `dom.streams.enabled` preference (needs to be set to `true` ) 和 preference (needs to be set to ). To change preferences in Firefox, visit about:config.	Opera Android 43	Safari iOS ?	Samsung Internet Android 7.0
`size`	Chrome 59	Edge 16	Firefox 57 Disabled 57 Disabled Disabled From version 57: this feature is behind the `dom.streams.enabled` preference (needs to be set to `true` ) 和 preference (needs to be set to ). To change preferences in Firefox, visit about:config.	IE 不支持 No	Opera 46	Safari ?	WebView Android 59	Chrome Android 59	Firefox Android 57 Disabled 57 Disabled Disabled From version 57: this feature is behind the `dom.streams.enabled` preference (needs to be set to `true` ) 和 preference (needs to be set to ). To change preferences in Firefox, visit about:config.	Opera Android 43	Safari iOS ?	Samsung Internet Android 7.0

图例

完整支持
不支持
兼容性未知 ?
实验。期望将来行为有所改变。
用户必须明确启用此特征。

元数据

最后修改： Feb 6, 2020

在此页

构造函数

特性

方法

范例

规范

浏览器兼容性

图例

相关话题