如何使用json构建angular，以便在ng构建后，可以手动替换json值以显示不同的结果？

{
  "name": "John Doe",
  "age": 30,
  "email": "johndoe@example.com"
}

import { HttpClient } from '@angular/common/http';

export class DataService {
  constructor(private http: HttpClient) { }

  getData() {
    return this.http.get('assets/data.json');
  }
}

import { Component, OnInit } from '@angular/core';
import { DataService } from './data.service';

@Component({
  selector: 'app-my-component',
  template: `
    <h1>{{ data.name }}</h1>
    <p>Age: {{ data.age }}</p>
    <p>Email: {{ data.email }}</p>
  `
})
export class MyComponent implements OnInit {
  data: any;

  constructor(private dataService: DataService) { }

  ngOnInit() {
    this.dataService.getData().subscribe((data: any) => {
      this.data = data;
    });
  }
}