更新时间:2023-02-27 07:47:20
对于双向绑定,您需要以下内容:
For two-way binding you need something like:
@Component({
selector: 'menu',
template: `
<button (click)="menuvisible = !menuvisible; menuvisibleChange.emit(menuvisible)">toggle</button>
<!-- or
<button (click)="toggleVisible()">toggle</button> -->
`,
// HTTP_PROVIDERS should now be imports: [HttpModule] in @NgModule()
providers: [/*HTTP_PROVIDERS*/, ApplicationService],
// This should now be added to declarations and imports in @NgModule()
// imports: [RouterModule, CommonModule, FormsModule]
directives: [/*ROUTER_DIRECTIVES, FORM_DIRECTIVES, NgClass, NgForm*/]
})
export class MenuComponent implements OnInit {
@Input() menuvisible:boolean;
@Output() menuvisibleChange:EventEmitter<boolean> = new EventEmitter<boolean>();
// toggleVisible() {
// this.menuvisible = !this.menuvisible;
// this.menuvisibleChange.emit(this.menuvisible);
// }
}
并像使用它
@Component({
selector: 'some-component',
template: `
<menu [(menuvisible)]="menuVisibleInParent"></menu>
<div>visible: {{menuVisibleInParent}}</div>
`
directives: [MenuComponent]
})
class SomeComponent {
menuVisibleInParent: boolean;
}