javascript – 如何在Angular 2中禁用浏览器后退按钮

我正在使用Angular 2开发一个网站.
有没有办法使用Angular 2禁用或触发浏览器后退按钮？

谢谢

解决方法:

不确定这是否已经排序,但仍然发布答案,以供将来参考.
要解决这个问题,您基本上需要在app-component中添加一个监听器,并在angular-router上设置一个canDeactivate防护.

// in app.component.ts
import { LocationStrategy } from '@angular/common';

@Component({
  selector: 'app-root'
})
export class AppComponent {
  constructor(
    private location: LocationStrategy
  ) {
    // check if back or forward button is pressed.
    this.location.onPopState(() => {
      // set isBackButtonClicked to true.
      this.someNavigationService.setBackClicked(true);
      return false;
    });
  }
}

// in navigation guard
@Injectable()
export class NavigationGuard implements CanDeactivate<any> {
  constructor(private someNavigationService: SomeNavigationService) {}
  canDeactivate(component: any) {
    // will prevent user from going back
    if (this.someNavigationService.getBackClicked()) {
      this.someNavigationService.setBackClicked(false);
      // push current state again to prevent further attempts.
      history.pushState(null, null, location.href);
      return false;
    }
    return true;
  }
}

标签：javascript,angular,back-button
来源： https://codeday.me/bug/20190929/1830481.html