<form [formGroup]="form"> <label> <input type="radio" value="Male" formControlName="gender"> <span>male</span> </label> <label> <input type="radio" value="Female" formControlName="gender"> <span>female</span> </label> </form>
form: FormGroup; constructor(fb: FormBuilder) { this.name = 'Angular2' this.form = fb.group({ gender: ['', Validators.required] }); }