A

Admin • 828.70K Points
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Q. What is the use of the `trackBy` function in *ngFor?

  • (A) To filter the items
  • (B) To sort the items
  • (C) To improve performance by tracking item identity
  • (D) To convert item to string
  • Correct Answer - Option(C)
  • Views: 13
  • Filed under category Angular JS
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Explanation by: Admin
trackBy helps Angular track which items have changed, improving rendering performance.

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