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angular - Angular2 How to navigate to certain section of the page identified with an id attribute

How to navigate to certain section of the page identified with an id attribute?

Example:

I need to navigate to "structure" paragraph on my page

<div id="info">
  <h3>Info</h3>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
</div>    
<div id="structure">
  <h3>Structure</h3>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
</div>

And I have a following navigation structure:

<li>
  <ul materialize="collapsible" class="collapsible" data-collapsible="accordion">
    <li><a routerLink="policies" class="collapsible-header">Policies</a>
      <div class="collapsible-body">
         <ul>
           <li><a >Info</a></li>
           <li><a >Structure</a></li>
           <li><a >Something Else</a></li>
         </ul>
      </div>
    </li>
   </ul>
 </li>

It is my understanding that in Angular1.0 I simply could've navigate to the page section using something like: ui-sref="policies({'#':'structure'})" or href="#structure" or ui-sref="policies" href="#structure"...

How can I do it in Angular2? I looked at the Fragment example in the docs: Query Parameters and Fragments section and I am finding they example to be very confusing and a bit overkill for such a potentially simple task

See Question&Answers more detail:os

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1 Answer

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by (71.8m points)

Angular 2: I would prefer to go with scrollIntoView() method scrollIntoView. It would provide smooth scrolling transition effect in the browser.

HTML Code

    <div #info id="info">
        <h3>Info</h3>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
    </div>
    <div #structure  id="structure">
        <h3>Structure</h3>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
    </div>

  <li>
    <ul materialize="collapsible" class="collapsible" data-collapsible="accordion">
      <li><a routerLink="policies" class="collapsible-header">Policies</a>
        <div class="collapsible-body">
           <ul>
             <li (click)="infoStruc()"><a >Info</a></li>
             <li (click)="moveToStructure()"><a  >Structure</a></li>
             <li><a >Something Else</a></li>
         </ul>
       </div>
     </li>
   </ul>
 </li>

and in the Component.

  @Component({
    selector: 'my-app',
    template: `template.html        `
  })
  export class AppComponent {
    @ViewChild('structure') public structure : ElementRef;

    @ViewChild('info') public info : ElementRef;

    public moveToStructure():void {
            this.structure.nativeElement.scrollIntoView({ behavior: 'smooth', block: 'end', inline: 'start' });
    }

    public infoStruc():void {
        setImmediate(() => {
            this.info.nativeElement.scrollIntoView({ behavior: 'smooth', block: 'end', inline: 'start' });
        });
    }
}

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