This interface of this property is deprecated in the Navigation Timing Level 2
specification. Please use the PerformanceNavigationTiming
interface instead.
The legacy
PerformanceTiming
.fetchStart
read-only property returns an unsigned long long
representing the moment,
in milliseconds since the UNIX epoch, the browser is ready to fetch the document using
an HTTP request. This moment is before the check to any application cache.
Syntax
time = performance.timing.fetchStart;
Specifications
Specification | Status | Comment |
---|---|---|
Navigation Timing The definition of 'PerformanceTiming.fetchStart' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
BCD tables only load in the browser
See also
- The
PerformanceTiming
interface it belongs to.PerformanceTiming
.fetchStart