如何将数组补丁到formarray中

import { Component } from '@angular/core';
import { FormBuilder, FormGroup, FormArray } from '@angular/forms';

@Component({
  selector: 'app-root',
  template: `
    <form [formGroup]="myForm">
      <div formArrayName="items">
        <div *ngFor="let item of items.controls; let i = index">
          <div [formGroupName]="i">
            <input formControlName="name" placeholder="Name">
          </div>
        </div>
      </div>
      <button (click)="addNewItem()">Add Item</button>
      <button (click)="removeItem()">Remove Item</button>
    </form>
  `,
})
export class AppComponent {
  myForm: FormGroup;

  constructor(private fb: FormBuilder) {
    this.myForm = this.fb.group({
      items: this.fb.array([]),
    });
  }

  get items(): FormArray {
    return this.myForm.get('items') as FormArray;
  }

  addNewItem(): void {
    const newItem = this.fb.group({
      name: [''],
    });
    this.items.push(newItem);
  }

  removeItem(): void {
    this.items.removeAt(this.items.length - 1);
  }
}