Q. When using useEffect with an empty dependency array, how often does it run?

  • (A) On every render
  • (B) Only on unmount
  • (C) Once after the initial render
  • (D) Every 5 seconds
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✅ Correct Answer: (C) Once after the initial render
Explanation: An empty dependency array causes useEffect to run only once on mount.

Published by Mr. Dubey ⭐ 109.99K Points at 08-Jun-2025 03:13 pm in React Js

Explanation by: Mr. Dubey
An empty dependency array causes useEffect to run only once on mount.

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