title: Angular 2 Reactive Forms - Detect input change event on component
body: <p>I would like to detect the value of change event to the input on form.component.ts.
  I would not like to call the function ex: (onChange) = "function($event.target.value)"</p>
  
  <pre><code>public form: FormGroup;
  
  constructor(private formBuilder: FormBuilder){ 
  
  }
  
  private loadForm(){
      this.form = this.formBuilder.group({
          tipo: [null, Validators.required],
          nomeRazao: [null, Validators.compose([Validators.required, Validators.minLength(3), Validators.maxLength(64)])],
          apelidoFantasia: [null, Validators.compose([Validators.required, Validators.minLength(3), Validators.maxLength(64)])],
          cpfCnpj: [null, Validators.compose([Validators.required, Validators.minLength(11), Validators.maxLength(14)])],
          rgIe: [null],
          contato: this.formBuilder.group({
              email: [null],
              telefone: [null]
          }),
          endereco: this.formBuilder.group({
              cep: [null, Validators.pattern('^([0-9]){5}([-])([0-9]){4}$')],
              uf: [null],
              cidade: [null],
              bairro: [null, Validators.required],
              logradouro: [null],
              complemento: [null],
              numero: [null, Validators.pattern('/^\d+$/')]
          })
      });
  }
  
  ngOnInit() {
      this.loadForm();
  }
  </code></pre>