如何访问FormArray元素值？

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

@Component({
  // 组件的元数据
})
export class MyComponent {
  myForm: FormGroup;

  constructor(private formBuilder: FormBuilder) {
    this.myForm = this.formBuilder.group({
      // 使用FormArray初始化控件
      myFormArray: this.formBuilder.array([])
    });
  }
}

const myFormArray = this.myForm.get('myFormArray') as FormArray;

const elementValue = myFormArray.at(index).value;

myFormArray.controls.forEach(control => {
  const elementValue = control.value;
  // 对元素值进行其他操作
});