According to mdn navigationStart, we can use PerformanceNavigationTiming interface instead. But I can't find a way to get any thing equal to performance.timing.navigationStart performance.now(), which is approximately equal to Date.now().

Some says performance.timeOrigin, but my test shows that performance.timeOrigin is not equal to performance.timing.navigationStart. In chrome performance.timeOrigin - performance.timing.navigationStart = -951855.3999023438

CodePudding user response：

You are facing a bug in Chrome 106. performance.timeOrigin is indeed what you want and it should indeed be close to performance.timing.navigationStart. There is even a WPT (that Chrome 106 fails).

This bug has already been reported and should be fixed in the next versions of Chrome, we just have to wait for it.