PerformanceTiming: requestStart property

{{ APIRef("PerformanceTiming") }} {{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.requestStart read-only property returns an unsigned long long representing the moment, in milliseconds since the UNIX epoch, when the browser sent the request to obtain the actual document, from the server or from a cache. If the transport layer fails after the start of the request and the connection is reopened, this property will be set to the time corresponding to the new request.

Value

An unsigned long long.

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• The {{domxref("PerformanceTiming")}} interface it belongs to.