ShangHaiYuan-AnXin/src/app/ui/stepper/stepper.component.ts

import { Component, OnInit } from '@angular/core';
import {FormBuilder, FormGroup, Validators} from '@angular/forms';
@Component({
  selector: 'app-stepper',
  templateUrl: './stepper.component.html',
  styleUrls: ['./stepper.component.scss']
})
export class StepperComponent implements OnInit {
  isLinear = false;
  firstFormGroup: FormGroup;
  secondFormGroup: FormGroup;
  constructor(private _formBuilder: FormBuilder) { }

  ngOnInit() {
    this.firstFormGroup = this._formBuilder.group({
      firstCtrl: ['', Validators.required]
    });
    this.secondFormGroup = this._formBuilder.group({
      secondCtrl: ['', Validators.required]
    });
  }

}