我正在尝试为控制inputtestingangular2双向绑定。 这是错误: Can't bind to 'ngModel' since it isn't a known property of 'input'. app.component.html <input id="name" type="text" [(ngModel)]="name" /> <div id="divName">{{name}}</div> app.component.ts @Component({ selector: 'app-root', templateUrl: './app.component.html' }) export class AppComponent implements OnInit { name: string; } app.component.spec.ts import { TestBed, async } from '@angular/core/testing'; import { AppComponent } from './app.component'; import { AppService […]