Angular:Formulários

Definindo campos

Chamada do componente

<login-user title="Brapci 3.1"></login-user>

Coponente TS

export ....
@imput() public title: string = "Login Title";

FormBuild

export class PreviewComponent {

 @Input() public book:Array<any>|any

 constructor( private formBuilder: FormBuilder ) {}
 formBook = new FormGroup({
   title: new FormControl(, Validators.required),
   isbn: new FormControl(),
 });

       <form [formGroup]="formBook">
       <textarea
         id="title"
         name="title"
         class="form-control border border-secondary"
         formControlName="title"
         style="height: 130px; font-size: 1.6em"
       ></textarea>

       salvar
       cancelar
       </form>