Profiling JavaScript Code

const t0 = performance.now();
doExpensiveTask();
const t1 = performance.now();
console.log(`Call took ${t1 - t0} milliseconds`);

It's faster to execute
It provides microsecond precision and is monotonic
performance.now() is preferred because: 1) Provides microsecond precision timing, 2) Monotonic, always increases in one direction, 3) Not affected by system clock changes, 4) More precise than Date.now(), 5) Specifically designed for performance measurements, 6) Consistent across browser implementations, 7) Better for short duration measurements, 8) Standard part of performance APIs.
It works in more browsers
It's more accurate for long operations