PerformanceTiming.requestStart

概要

PerformanceTiming.requestStart 是一个返回代表一个时刻的 unsigned long long 型只读属性,为浏览器发送从服务器或者缓存获取实际文档的请求之时的 Unix毫秒时间戳。如果传输层在请求开始之后发生错误并且连接被重新打开,则该属性将会被设定为新的请求的相应的值 。

语法

time = performanceTiming.requestStart;

标准

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

浏览器兼容性

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Deprecated
Chrome Full support 6Edge Full support YesFirefox Full support 7IE Full support 9Opera Full support 15Safari No support NoWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 7Opera Android Full support 15Safari iOS No support NoSamsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.

参见

文档标签和贡献者

此页面的贡献者: fscholz, micblo
最后编辑者: fscholz,