PerformanceNavigationTiming

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特性
方法
规范
浏览器兼容性
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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。

PerformanceNavigationTiming interface provides methods and properties to store and retrieve metrics regarding the browser's document navigation events. For example, this interface can be used to determine how much time it takes to load or unload a document.

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特性

This interface extends the following PerformanceEntry properties for navigation performance entry types by qualifying and constraining them as follows:

PerformanceEntry.entryType 只读: 返回 "navigation" .
PerformanceEntry.name 只读: 返回文档的地址 .
PerformanceEntry.startTime 只读: 返回 DOMHighResTimeStamp with a value of " 0 ".
PerformanceEntry.duration 只读: 返回 timestamp that is the difference between the PerformanceNavigationTiming.loadEventEnd and PerformanceEntry.startTime 特性。

This interface also extends following PerformanceResourceTiming properties for navigation performance entry types by qualifying and constraining them as follows:

PerformanceResourceTiming.initiatorType 只读: 返回 "navigation" .

The interface also supports the following properties:

PerformanceNavigationTiming.domComplete 只读: DOMHighResTimeStamp representing a time value equal to the time immediately before the browser sets the current document readiness of the current document to complete .
PerformanceNavigationTiming.domContentLoadedEventEnd 只读: DOMHighResTimeStamp representing the time value equal to the time immediately after the current document's DOMContentLoaded event completes.
PerformanceNavigationTiming.domContentLoadedEventStart 只读: DOMHighResTimeStamp representing the time value equal to the time immediately before the user agent fires the DOMContentLoaded event at the current document.
PerformanceNavigationTiming.domInteractive 只读: DOMHighResTimeStamp representing a timestamp representing the time value equal to the time immediately before the user agent sets the current document readiness of the current document to interactive .
PerformanceNavigationTiming.loadEventEnd 只读: DOMHighResTimeStamp representing the time when the load event of the current document is completed.
PerformanceNavigationTiming.loadEventStart 只读: DOMHighResTimeStamp representing the time value equal to the time immediately before the load event of the current document is fired.
PerformanceNavigationTiming.redirectCount 只读
PerformanceNavigationTiming.requestStart 只读: DOMHighResTimeStamp representing the time immediately before the user agent starts requesting the resource from the server, or from relevant application caches or from local resources.
PerformanceNavigationTiming.responseStart 只读: DOMHighResTimeStamp representing the time immediately after the user agent's HTTP parser receives the first byte of the response from relevant application caches, or from local resources or from the server.
PerformanceNavigationTiming.type 只读: string representing the navigation type. Must be: " navigate ", " reload ", " back_forward " or " prerender ".
PerformanceNavigationTiming.unloadEventEnd 只读: DOMHighResTimeStamp representing the time value equal to the time immediately after the user agent finishes the unload event of the previous document.
PerformanceNavigationTiming.unloadEventStart 只读: DOMHighResTimeStamp representing the time value equal to the time immediately before the user agent starts the unload event of the previous document.

方法

PerformanceNavigationTiming.toJSON(): 返回 DOMString that is the JSON representation of the PerformanceNavigationTiming 对象。

规范

规范	状态	注释
Navigation Timing Level 2 The definition of 'PerformanceNavigationTiming' in that specification.	工作草案	初始定义。

浏览器兼容性

The compatibility table in 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
`PerformanceNavigationTiming`	Chrome 57	Edge ≤18	Firefox 58 58 You can disable this feature using the `dom.enable_performance_navigation_timing` preference (see bug 1403926 ).	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58 58 You can disable this feature using the `dom.enable_performance_navigation_timing` preference (see bug 1403926 ).	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`domComplete`	Chrome 57	Edge 12	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`domContentLoadedEventEnd`	Chrome 57	Edge 12	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`domContentLoadedEventStart`	Chrome 57	Edge 12	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`domInteractive`	Chrome 57	Edge 12	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`loadEventEnd`	Chrome 57	Edge 12	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`loadEventStart`	Chrome 57	Edge 12	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`redirectCount`	Chrome 57	Edge 12	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`toJSON`	Chrome 57	Edge ≤18	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`type`	Chrome 57	Edge 12	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`unloadEventEnd`	Chrome 57	Edge 12	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0
`unloadEventStart`	Chrome 57	Edge 12	Firefox 58	IE No	Opera 44	Safari No	WebView Android 57	Chrome Android 57	Firefox Android 58	Opera Android 43	Safari iOS No	Samsung Internet Android 7.0

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特性

方法

规范

浏览器兼容性

图例

另请参阅

元数据

相关话题