问显示/隐藏部分角5

EN

import .....;

export class SalesComponent implements OnInit {
    salesForm: FormGroup;

    constructor ( private formBuild: FormBuilder) {}

     ngOnInit() {
      this.salesForm = this.formBuild.group({
          type : new FormControl(),
          person : new FormControl()
      });
     }
}

<form novalidate [formGroup]="salesForm">
  <div class="row">
   <div class="col-md-4">
    <div class="form-group">
     <label>MOBILE PHONES</label>
     <div class="radio">
      <label><input type="radio" formControlName="type" name="type" value="LG">LG</label>
      <label><input type="radio" formControlName="type" name="type" value="HTC">HTC</label>
     </div>

     <legend>PEOPLE</legend>
     <div class="checkbox">
      <label><input type="checkbox" formControlName="person" value="JAMES">JAMES</label>
      <label><input type="checkbox" formControlName="person"  value="JOHN">JOHN</label>
     </div>
    </div>
</div>

 <div class="col-md-4">
   <div *ngIf=" type == 'HTC' " class="form-group">
    <h1>HTC RESULT PHONES</h1>
   </div>
   <div *ngIf=" person == 'JAMES' " class="form-group">
    <h1>JAMES RESULT</h1>
   </div>
  </div>
 </div>
</form>