您可以在主组件上注册路由更改侦听器，并在路由更改时滚动到顶部。

import { Component, OnInit } from '@angular/core';
import { Router, NavigationEnd } from '@angular/router';

@Component({
    selector: 'my-app',
    template: '<ng-content></ng-content>',
})
export class MyAppComponent implements OnInit {
    constructor(private router: Router) { }

    ngOnInit() {
        this.router.events.subscribe((evt) => {
            if (!(evt instanceof NavigationEnd)) {
                return;
            }
            window.scrollTo(0, 0)
        });
    }
}

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。

@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) ｝ }) ｝

对于每个正在寻找解决方案并阅读这篇文章的人。的

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

并没有回答这个主题的问题。如果我们查看Angular的源代码，我们会看到一些有趣的行:

这个东西只对反向导航有用。其中一个解决方案可能是:

constructor(router: Router) {

    router.events
        .pipe(filter((e): e is NavigationEnd => e instanceof NavigationEnd))
        .subscribe(() => {
            this.document.querySelector('#top').scrollIntoView();
        });
}

这将查看每个导航到该id的div并滚动到它;

另一种方法是使用相同的逻辑，但在decorator或指令的帮助下，允许你选择何时何地滚动顶部;

Angular最近引入了一个新特性，在Angular的路由模块内部做了如下更改

@NgModule({
  imports: [RouterModule.forRoot(routes,{
    scrollPositionRestoration: 'top'
  })],

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;
      }
    });
  }
}