Can't bind to 'ngModel' since it isn't a known property of 'input'

angular2在双向数据绑定时[(ngModel)]无法使用，出现的错误是： Can't bind to 'ngModel' since it isn't a known property of 'input'. 解决办法： 在文件 app.component.ts 中引入ngModel 具体为： 添加两行代码： import { FormsModule } from '@angular/for

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