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How to properly work with setTimeout/setInterval timers?

Q: How to properly work with setTimeout/setInterval timers?

1) Set the timer in useEffect. 2) Clear it in cleanup (clearTimeout/clearInterval). 3) For interval, consider stale closures (useRef). 4) Do not create a timer on every render. 5) For complex logic, create a custom hook.

Updated: 2026-08-31

Answer

•Set the timer in useEffect.

•Clear it in cleanup (clearTimeout/clearInterval).

•For interval, consider stale closures (useRef).

•Do not create a timer on every render.

•For complex logic, create a custom hook.

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How to properly work with setTimeout/setInterval timers?

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