大家好，这在angular 4中是适用的。你只需要引用父节点来滚动路由器更改

layout.component.pug

.wrapper(#outlet="")
    router-outlet((activate)='routerActivate($event,outlet)')

layout.component.ts

 public routerActivate(event,outlet){
    outlet.scrollTop = 0;
 }`

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)
        });
    }
}

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

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

使用路由器本身会导致你无法完全克服的问题，以保持一致的浏览器体验。在我看来，最好的方法是使用一个自定义指令，让这重置滚动点击。这样做的好处是，如果你在相同的url，你点击，页面将滚动回顶部以及。这与一般的网站是一致的。基本指令可以是这样的:

import {Directive, HostListener} from '@angular/core';

@Directive({
    selector: '[linkToTop]'
})
export class LinkToTopDirective {

    @HostListener('click')
    onClick(): void {
        window.scrollTo(0, 0);
    }
}

具有以下用途:

<a routerLink="/" linkToTop></a>

这对于大多数用例来说已经足够了，但是我可以想象一些问题 由此产生:

由于window的使用，不能在通用上工作 对更改检测的速度影响很小，因为它是由每次单击触发的 没有办法禁用这个指令

克服这些问题其实很容易:

@Directive({
  selector: '[linkToTop]'
})
export class LinkToTopDirective implements OnInit, OnDestroy {

  @Input()
  set linkToTop(active: string | boolean) {
    this.active = typeof active === 'string' ? active.length === 0 : active;
  }

  private active: boolean = true;

  private onClick: EventListener = (event: MouseEvent) => {
    if (this.active) {
      window.scrollTo(0, 0);
    }
  };

  constructor(@Inject(PLATFORM_ID) private readonly platformId: Object,
              private readonly elementRef: ElementRef,
              private readonly ngZone: NgZone
  ) {}

  ngOnDestroy(): void {
    if (isPlatformBrowser(this.platformId)) {
      this.elementRef.nativeElement.removeEventListener('click', this.onClick, false);
    }
  }

  ngOnInit(): void {
    if (isPlatformBrowser(this.platformId)) {
      this.ngZone.runOutsideAngular(() => 
        this.elementRef.nativeElement.addEventListener('click', this.onClick, false)
      );
    }
  }
}

这考虑了大多数用例，使用方法与基本用例相同，优点是启用/禁用它:

<a routerLink="/" linkToTop></a> <!-- always active -->
<a routerLink="/" [linkToTop]="isActive"> <!-- active when `isActive` is true -->

如果你不想被广告吸引，就不要看广告

Another improvement could be made to check whether or not the browser supports passive events. This will complicate the code a bit more, and is a bit obscure if you want to implement all these in your custom directives/templates. That's why I wrote a little library which you can use to address these problems. To have the same functionality as above, and with the added passive event, you can change your directive to this, if you use the ng-event-options library. The logic is inside the click.pnb listener:

@Directive({
    selector: '[linkToTop]'
})
export class LinkToTopDirective {

    @Input()
    set linkToTop(active: string|boolean) {
        this.active = typeof active === 'string' ? active.length === 0 : active;
    }

    private active: boolean = true;

    @HostListener('click.pnb')
    onClick(): void {
      if (this.active) {
        window.scrollTo(0, 0);
      }        
    }
}

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;
      }
    });
  }
}

如果你只是需要滚动页面到顶部，你可以这样做(不是最好的解决方案，但很快)

document.getElementById('elementId').scrollTop = 0;