Angular 4 - Conditional CSS Classes


Answer :

You can do this using the class binding:

<input type="email" class="form-control" [class.error-field]="error">

yeah there's a better way using ngClass attribute like this:

<input type="email" [ngClass]="{'form-control': true, 'error-field': error}" />

I believe you are looking for NgClass or NgStyle: https://angular.io/api/common/NgClass https://angular.io/api/common/NgStyle


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