angular-component-class.ts

export class AppComponent implements OnInit {
  myForm: FormGroup;
  submitted = false;
  constructor(private formBuilder: FormBuilder) {}
  ngOnInit() {
    this.myForm = this.formBuilder.group({
      email: ['', [Validators.required, Validators.email]],
      password: [
        '',
        [Validators.required, Validators.minLength(6), Validators.maxlength(20)]
      ]
    });
  }
  get formControls() {
    return this.myForm.controls;
  }
  onSubmit() {
    this.submitted = true;
    if (this.myForm.invalid) {
      return;
    }
    alert(
      'New user successfully registered \n' + JSON.stringify(this.myForm.value)
    );
  }
}