滚动到顶部,标题服务在6中不能并行工作

this.document.body.scrollTop = 0;
        this.router.routeReuseStrategy.shouldReuseRoute = function() {
            return false;
        };

    /* Activated change detection for the title change */
    this.router.events
        .filter((event) => event instanceof NavigationEnd)
        .map(() => this.activatedRoute)
        .map((route) => {
            while (route.firstChild) {
                route = route.firstChild;
            }
            return route;
        })
        .filter((route) => route.outlet === 'primary')
        .mergeMap((route) => route.data)
        .subscribe((event) => {
            this.titleService.setTitle(event['title']);
            this.metaService.addTag(event['meta']);
        });

const appRoutes: Routes = [
    {
        path: '',
        loadChildren: './main/pages/pages.module#PagesModule',
        data: {
            title: 'Home Page',
            meta: {name: 'description', content: 'hello its home'}
        }
    },
    {
        path: '**',
        redirectTo: '/you-know-nothing-jon-snow'
    }
];

此外,我需要使用滚动到顶部的几个动态网址页面滚动到顶部每次点击。如果我删除routeReuseStrategy setTitle工作,并使用router设置标题,两者都不能一起工作,我绑定了其他选项,但它们中的任何一个在应用程序中都不能按预期工作。