.domContentLoadedEventStart read-only property returns an
unsigned long long representing the moment, in miliseconds since the UNIX epoch, right before the parser sent the
DOMContentLoaded event, that is right after all the scripts that need to be executed right after parsing has been executed.
time = performanceTiming.domContentLoadedEventStart;
The definition of 'PerformanceTiming.domContentLoadedEventStart' in that specification.
PerformanceTiminginterface it belongs to.