在Angular 9中，当将表单设置为本地存储时，如何指定某些参数不会被保存？

import { Component } from '@angular/core';

@Component({
  selector: 'app-form',
  template: `
    <form (ngSubmit)="onSubmit()">
      <label>
        Name:
        <input type="text" [(ngModel)]="name" name="name">
      </label>
      <label>
        Email:
        <input type="email" [(ngModel)]="email" name="email">
      </label>
      <button type="submit">Submit</button>
    </form>
  `
})
export class FormComponent {
  name: string;
  email: string;
  excludeParams: string[] = ['email']; // 指定不保存的参数

  onSubmit() {
    const formData = {};
    Object.keys(this).forEach(key => {
      if (!this.excludeParams.includes(key)) {
        formData[key] = this[key];
      }
    });

    localStorage.setItem('formData', JSON.stringify(formData));
  }
}