📊 React Js
Q. How do you ensure a component only mounts once with a side-effect?
  • (A) Use useEffect without dependencies
  • (B) Use useEffect with an empty array
  • (C) Use componentDidUpdate
  • (D) Use useState
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✅ Correct Answer: (B) Use useEffect with an empty array

Explanation: Using `useEffect(() => {}, [])` ensures the side-effect runs only once.

Explanation by: Mr. Dubey
Using `useEffect(() => {}, [])` ensures the side-effect runs only once.

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