当访问formGroup值时，数值是否显示为空字符串？

import { Component, OnInit } from '@angular/core';
import { FormGroup, FormControl } from '@angular/forms';

@Component({
  selector: 'app-my-form',
  template: `
    <form [formGroup]="myFormGroup">
      <input formControlName="myControl" type="text">
    </form>
    <button (click)="getValue()">Get Value</button>
  `,
})
export class MyFormComponent implements OnInit {
  myFormGroup: FormGroup;

  ngOnInit() {
    this.myFormGroup = new FormGroup({
      myControl: new FormControl(''),
    });
  }

  getValue() {
    console.log(this.myFormGroup.value.myControl); // 输出当前输入框的值
  }
}