Browser & Web Performance · Middle · Question 67 of 75

How can you mark custom points in time to see them in DevTools and measure them in code?

1console.time() only, which can't be read by code
✓Correct answer: performance.mark() and performance.measure() from the User Timing API
3Date.now() stored in localStorage

Explanation

Marks and measures show up in the Performance panel and can be collected with a PerformanceObserver.

Further reading

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