What is the use of "track by" in ng-repeat expression Angular 1.*?

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Santosh Kumar Adidawarpu

What is the use of "track by" in ng-repeat expression Angular 1.*?

By Santosh Kumar Adidawarpu in Angular on Nov 16 2017

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Nov, 2017 16

Use track by in ng-repeat expression to avoid re-rendering of complete list and restricts duplicates in view:

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