import { Component , OnInit } from '@angular/core' ; import { FormBuilder , FormGroup , Validators } from '@angular/forms' ; @ Component ( { selector : 'stepper' , templateUrl : './stepper.component.html' , styleUrls : [ './stepper.component.scss' ] } ) export class StepperComponent implements OnInit { firstFormGroup : FormGroup ; secondFormGroup : FormGroup ; constructor ( private formBuilder ) { } ngOnInit ( ) { this . firstFormGroup = this . formBuilder . group ( { firstCtrl : [ '' , Validators . required ] } ) ; this . secondFormGroup = this . formBuilder . group ( { secondCtrl : [ '' , Validators . required ] } ) ; } }