A

Admin • 802.91K Points
Coach

Q. What does the trackBy function optimize in *ngFor?

  • (A) Performance by tracking list items by identity
  • (B) Change detection of inputs
  • (C) Form validation
  • (D) Routing speed
  • Correct Answer - Option(A)
  • Views: 7
  • Filed under category Angular JS
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Explanation by: Admin
trackBy helps Angular identify items uniquely, reducing DOM manipulations.

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