by 3 contributors:


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.


time = performanceTiming.unloadEventStart;


Specification Status Comment
Navigation Timing
The definition of 'PerformanceTiming.unloadEventStart' in that specification.
Recommendation Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 6.0 7.0 (7.0) 9.0 15.0 NotĀ supported
Feature Android Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support NotĀ supported 7.0 (7.0) 1.0 (7.0) 9.0 15.0 NotĀ supported

See also

Document Tags and Contributors

Contributors to this page: fscholz, namolmes, teoli
Last updated by: fscholz,