performancebeginner

performance — now() returns a number

📖 Usage Example

const t0 = performance.now()
doWork()
const t1 = performance.now()
console.log(t1 - t0, 'ms')

performance.now() returns a high-resolution timestamp to measure elapsed time.

performance.now()

performance.now() returns a high-resolution timestamp in milliseconds as a number.

Challenge: Verify that typeof performance.now() is 'number'.

💡 Hints (1)

1/10