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jokemmy/performance.now&Date.now.md

Last active August 28, 2017 15:11
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performance.now() vs Date.now()
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performance.now&Date.now.md

Date.now()

returns the number of milliseconds elapsed since 1 January 1970 00:00:00 UTC

performance.now()

returns the number of milliseconds/microseconds elapsed since an arbitrary epoch

Basically, performance.now() should only be used when you want to measure the relative distance between two time points, not their "absolute" position in time.

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