Use trackBy in Angular ngFor Loops and MatTables
Angular Logo (CC-BY 4.0 by Angular Team press Kit: https://angular.io/presskit).A missing trackBy
in an ngFor
block or a data table can often result in
hard-to-track and seemingly glitchy behaviors in your web app. Today, I’ll
discuss the signs that you need to use trackBy
. But first—some context:
More often than not, you’ll want to render some repeated element in Angular. You’ll see code that looks like this:
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