PerformanceTiming.fetchStart

概要

PerformanceTiming.fetchStart 是一个返回代表一个时刻的 unsigned long long 型只读属性,为浏览器已经准备好去使用HTTP请求抓取文档之时的 Unix毫秒时间戳。这一时刻在检查应用的缓存之前。

语法

time = performanceTiming.fetchStart;

标准

Specification Status Comment
Navigation Timing
PerformanceTiming.fetchStart
Recommendation Initial definition.

浏览器兼容性

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
fetchStart
Deprecated
Chrome Full support 6Edge Full support 12Firefox Full support 7IE Full support 9Opera Full support 15Safari Full support 11WebView Android Full support YesChrome Android Full support 18Edge Mobile Full support YesFirefox Android Full support 7Opera Android Full support 14Safari iOS Full support 11Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.

参见

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