在此页

• 特性
• 方法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

PerformanceMeasure 是 abstract interface for PerformanceEntry objects with an entryType of " measure ". Entries of this type are created by calling performance.measure() to add a 命名 DOMHighResTimeStamp ( measure ) between two marks to the browser's performance timeline .

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特性

This interface has no properties but it extends the following PerformanceEntry properties by qualifying/constrainting the properties as follows:

PerformanceEntry.entryType

Returns " measure ".

PerformanceEntry.name

Returns the name given to the measure when it was created via a call to performance.measure() .

PerformanceEntry.startTime

返回 timestamp given to the measure when performance.measure() 被调用。

PerformanceEntry.duration

返回 DOMHighResTimeStamp that is the duration of the measure (typically, the measure's end mark timestamp minus its start mark timestamp).

方法

This interface has no methods.

范例

See the example in Using the User Timing API .

规范

规范	状态	注释
User Timing Level 2 The definition of 'PerformanceMeasure' in that specification.	工作草案
User Timing The definition of 'PerformanceMeasure' in that specification.	推荐	Basic definition.

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
PerformanceMeasure	Chrome 25	Edge 12	Firefox 41	IE 10	Opera 33	Safari 11	WebView Android Yes	Chrome Android 25	Firefox Android 42	Opera Android 33	Safari iOS 11	Samsung Internet Android 1.5

图例

完整支持

完整支持

另请参阅

• User Timing (Overview)
• Using the User Timing API

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. PerformanceMeasure
2. 继承：

   1. PerformanceEntry
3. Related pages for User Timing API

   1. 性能
   2. PerformanceEntry
   3. PerformanceMark