angular window scroll to top not working

1scrollToTop(){
2	window.scroll(0,0);
3}

1//inside the app.component.html add (activate):
2<router-outlet  (activate)="onActivate($event)"></router-outlet>
3
4//inside app.component.ts, add inside the class of the component:
5export class AppComponent {
6 
7  onActivate(event) {
8    window.scroll(0,0);
9    //or document.body.scrollTop = 0;
10    //or document.querySelector('body').scrollTo(0,0)
11    
12}
13}
14

1  var callback = getByClass(containers[i],