Angular 2 - Bindings cannot contain assignments

Question

I need to give a class to a if a property of item has the same value as a property from an object in an array.

Here\'s the code

Answer 1

Its a bad practice to use expressions in angular bindings

Move the class expression into controller.

export class AppComponent {
    title = 'Groups';

    getClass(item): void {

      // add filter logic here
      return this.definitionDetails.Groups.filter(i => i.AbsenceReservationGroupID === item.ID).length > 0

    }
}

The tr will be something like,