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How to scroll to a fragment in Angular.io (scroll to anchor)
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import { Component, OnInit } from '@angular/core'; | |
import { OnDestroy } from '@angular/core'; | |
import { Router, NavigationEnd } from '@angular/router'; | |
import { Subscription } from 'rxjs/Rx'; | |
@Component({ | |
selector: 'scroll-to-anchor-example', | |
template: `<a type="button" md-button class="button" routerLink="/this-view-url" | |
fragment="test-fragment" routerLinkActive="active">Go to test fragment</a> | |
<p>Blah blah blah ...</p> | |
... | |
<h2 id="test-fragment">Test Fragment</h2> | |
<p>blah blah blah ...</p>`, | |
styleUrls: ['./scroll-to-anchor-example.component.css'] | |
}) | |
export class UsageComponent implements OnInit { | |
private scrollSubscription: Subscription; | |
constructor(private router: Router) { | |
this.scrollSubscription = router.events.subscribe(s => { | |
if (s instanceof NavigationEnd) { | |
const tree = router.parseUrl(router.url); | |
if (tree.fragment) { | |
const element = document.querySelector('#' + tree.fragment); | |
if (element) { element.scrollIntoView(true); } | |
} | |
} | |
}) | |
} | |
ngOnInit() { | |
} | |
public ngOnDestroy() { | |
this.scrollSubscription.unsubscribe(); | |
} | |
} |
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