Summary
The PerformanceTiming.unloadEventStart read-only property returns an unsigned long long representing the moment, in miliseconds since the UNIX epoch, the unload event has been thrown. If there is no previous document, or if the previous document, or one of the needed redirects, is not of the same origin, the value returned is 0.
Syntax
time = performanceTiming.unloadEventStart;
Specifications
| Specification | Status | Comment |
|---|---|---|
| Navigation Timing The definition of 'PerformanceTiming.unloadEventStart' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
See also
- The
PerformanceTiminginterface it belongs to.