Hiding an input form

You can use radio button for same

      <div radio-group [(ngModel)]="haveCoupon" formControlName="havecoupon" name="havecoupon">
	      <ion-list-header>
          Do You Have Coupon ?
        </ion-list-header>
        <ion-item>
	        <ion-label>Yes</ion-label>
	        <ion-radio value="yes"></ion-radio>
        </ion-item>
        <ion-item>
          <ion-label>No</ion-label>
          <ion-radio checked="true" value="no"></ion-radio>
        </ion-item>
      </div>

      <ion-item *ngIf="haveCoupon=='yes'">
        <ion-label floating>Put Coupon Code</ion-label>
        <ion-input type="text" [(ngModel)]="couponCode" name="couponcode" autocapitalize="on" formControlName="couponcode"></ion-input>
      </ion-item>