Q. Which of the following is true about React keys in a list?

  • (A) They can be duplicated
  • (B) They should be the index of the array always
  • (C) They must be unique among siblings
  • (D) They are optional
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✅ Correct Answer: (C) They must be unique among siblings
Explanation: React keys must be unique among sibling elements for optimal rendering.

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

Explanation by: Mr. Dubey
React keys must be unique among sibling elements for optimal rendering.

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