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WithoutBook LIVE Mock Interviews Angular 8 Related interview subjects: 20

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Know the top Angular 8 interview questions and answers for freshers and experienced candidates to prepare for job interviews.

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Know the top Angular 8 interview questions and answers for freshers and experienced candidates to prepare for job interviews.

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Ques 1

What is the purpose of trackBy in ngFor?

The trackBy function is used in ngFor to improve the performance of rendering by helping Angular identify which items have changed, been added, or been removed in a list.

Example:

*ngFor='let item of items; trackBy: trackByFunction'

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