在使用form组件的模块引入如下模块:
import {
FormsModule,ReactiveFormsModule }
from '@angular/forms';
@NgModule({
imports: [
CommonModule,
FormsModule,
ReactiveFormsModule ,
systemRouting
],
declarations: [SystemComponent,
RoleComponent, MenuComponent,
RoleStaffComponent],
exports:[
SystemComponent,
RouterModule
],
})