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PerformanceTiming.navigationStart

Summary

The PerformanceTiming.navigationStart read-only property returns an unsigned long long representing the moment, in miliseconds since the UNIX epoch, right after the prompt for unload terminates on the previous document in the same browsing context. If there is no previous document, this value will be the same as PerformanceTiming.fetchStart.

Syntax

time = performanceTiming.navigationStart;

Specifications

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

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 6.0 (Yes) 7.0 (7.0) 9.0 15.0 (Yes)
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 (Yes)

See also

Document Tags and Contributors

Tags: 
 Contributors to this page: wenjiaz, abbycar, fscholz, kscarfone, dispareil, teoli
 Last updated by: wenjiaz,