Q. What is the purpose of the trackBy function in *ngFor?

  • (A) To improve performance by tracking list items
  • (B) To display index numbers
  • (C) To bind CSS styles
  • (D) To change layout structure
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✅ Correct Answer: (A) To improve performance by tracking list items
Explanation: trackBy helps Angular track which items have changed, improving performance.

Published by Mr. Dubey ⭐ 110.47K Points at 08-Jun-2025 12:16 pm in Angular

Explanation by: Mr. Dubey
trackBy helps Angular track which items have changed, improving performance.

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