PerformanceTiming.domainLookupStart

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  1. 概要
  2. 语法
  3. 标准
  4. 浏览器兼容性
  5. 参见

概要

PerformanceTiming.domainLookupStart 是一个返回代表一个时刻的 unsigned long long 型只读属性，为域名开始解析之时的 Unix毫秒时间戳。如果一个持久连接被使用，或者该信息已经被本地资源或者缓存存储，则该值等同于 PerformanceTiming.fetchStart。

语法

time = performanceTiming.domainLookupStart;

标准

Specification Status Comment
Navigation Timing
PerformanceTiming.domainLookupStart		 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
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

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