1. 使用动态数据

# // app.component.ts
import { Component } from '@angular/core';
@Component({
  //根主键
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  title = 'my-app';
}
# // app.component.html
<div>{{title}}</div>