如果您使用服务器端呈现，则应该注意不要在服务器上使用窗口运行代码，因为服务器上不存在该变量。这将导致代码被破坏。

export class AppComponent implements OnInit {
  routerSubscription: Subscription;

  constructor(private router: Router,
              @Inject(PLATFORM_ID) private platformId: any) {}

  ngOnInit() {
    if (isPlatformBrowser(this.platformId)) {
      this.routerSubscription = this.router.events
        .filter(event => event instanceof NavigationEnd)
        .subscribe(event => {
          window.scrollTo(0, 0);
        });
    }
  }

  ngOnDestroy() {
    this.routerSubscription.unsubscribe();
  }
}

isPlatformBrowser是一个函数，用于检查当前应用程序所呈现的平台是否是浏览器。我们给它注入platformId。

它也可以检查变量窗口的存在，为了安全起见，像这样:

if (typeof window != 'undefined')

你可以利用observable filter方法更简洁地写这个:

this.router.events.filter(event => event instanceof NavigationEnd).subscribe(() => {
      this.window.scrollTo(0, 0);
});

如果你在使用Angular Material 2 sidenav时遇到滚动到顶部的问题，这将有所帮助。窗口或文档主体不会有滚动条，因此您需要获得sidenav内容容器并滚动该元素，否则尝试将滚动窗口作为默认值。

this.router.events.filter(event => event instanceof NavigationEnd)
  .subscribe(() => {
      const contentContainer = document.querySelector('.mat-sidenav-content') || this.window;
      contentContainer.scrollTo(0, 0);
});

还有，Angular CDK v6。X现在有一个滚动包，可以帮助处理滚动。

对于iphone/ios safari，您可以使用setTimeout进行包装

setTimeout(function(){
    window.scrollTo(0, 1);
}, 0);

从Angular 6.1开始，路由器提供了一个名为scrollPositionRestoration的配置选项，这是为了满足这种情况而设计的。

imports: [
  RouterModule.forRoot(routes, {
    scrollPositionRestoration: 'enabled'
  }),
  ...
]

Here's a solution that I've come up with. I paired up the LocationStrategy with the Router events. Using the LocationStrategy to set a boolean to know when a user's currently traversing through the browser history. This way, I don't have to store a bunch of URL and y-scroll data (which doesn't work well anyway, since each data is replaced based on URL). This also solves the edge case when a user decides to hold the back or forward button on a browser and goes back or forward multiple pages rather than just one.

附注:我只测试了最新版本的IE、Chrome、FireFox、Safari和Opera(截至本文)。

希望这能有所帮助。

export class AppComponent implements OnInit {
  isPopState = false;

  constructor(private router: Router, private locStrat: LocationStrategy) { }

  ngOnInit(): void {
    this.locStrat.onPopState(() => {
      this.isPopState = true;
    });

    this.router.events.subscribe(event => {
      // Scroll to top if accessing a page, not via browser history stack
      if (event instanceof NavigationEnd && !this.isPopState) {
        window.scrollTo(0, 0);
        this.isPopState = false;
      }

      // Ensures that isPopState is reset
      if (event instanceof NavigationEnd) {
        this.isPopState = false;
      }
    });
  }
}

@Fernando埃切维里亚 太棒了!但是这段代码不能在哈希路由器或惰性路由器中工作。因为它们不会触发位置更改。 可以试试这个:

private lastRouteUrl: string[] = [] ngOnInit(): void { This.router.events.subscribe ((ev) => { const len = this.lastRouteUrl.length if (ev instanceof NavigationEnd) { this.lastRouteUrl.push (ev.url) If (len > 1 && ev。Url === this。lastRouteUrl[len - 2]) { 返回 ｝ 窗口。scrollTo (0, 0) ｝ }) ｝