PerformanceTiming: responseStart property
{{APIRef("Performance API")}} {{Deprecated_Header}}
[!WARNING] This interface of this property is deprecated in the Navigation Timing Level 2 specification. Please use the
{{domxref("PerformanceNavigationTiming")}}interface instead.
The legacy
PerformanceTiming.responseStart
read-only property returns an unsigned long long representing the moment in
time (in milliseconds since the UNIX epoch) when the browser received the first byte of
the response from the server, cache, or local resource.
Value
An unsigned long long.
Specifications
{{Specifications}}
Browser compatibility
{{Compat}}
See also
- The
{{domxref("PerformanceTiming")}}interface it belongs to.