PerformanceTiming.unloadEventStart

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

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Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 6.0 (Yes) 7.0 (7.0) 9.0 15.0 No support
Feature Android Edge Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support No support (Yes) 7.0 (7.0) 1.0 (7.0) 9.0 15.0 No support

See also

Document Tags and Contributors

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