PerformanceTiming.domainLookupStart - Web APIs 编辑

This interface of this property is deprecated in the Navigation Timing Level 2 specification. Please use the PerformanceNavigationTiming interface instead.

The legacy PerformanceTiming.domainLookupStart read-only property returns an unsigned long long representing the moment, in miliseconds since the UNIX epoch, where the domain lookup starts. If a persistent connection is used, or the information is stored in a cache or a local resource, the value will be the same as PerformanceTiming.fetchStart.

Syntax

time = performanceTiming.domainLookupStart;

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• The PerformanceTiming interface it belongs to.