drozzy drozzy - 5 months ago 67
AngularJS Question

Anchor links in Angularjs?

Is it possible to use anchor links with Angularjs?


<a href="#top">Top</a>
<a href="#middle">Middle</a>
<a href="#bottom">Bottom</a>

<div name="top"></div>
<div name="middle"></div>
<div name="bottom"></div>

Thank you


There are a few ways to do this it seems.

Option 1: Native Angular

Angular provides an $anchorScroll service, but the documentation is severely lacking and I've not been able to get it to work.

Check out http://www.benlesh.com/2013/02/angular-js-scrolling-to-element-by-id.html for some insight into $anchorScroll.

Option 2: Custom Directive / Native JavaScript

Another way I tested out was creating a custom directive and using el.scrollIntoView(). This works pretty decently by basically doing the following in your directive link function:

var el = document.getElementById(attrs.href);

However, it seems a bit overblown to do both of these when the browser natively supports this, right?

Option 3: Angular Override / Native Browser

If you take a look at http://docs.angularjs.org/guide/dev_guide.services.$location and its HTML Link Rewriting section, you'll see that links are not rewritten in the following:

Links that contain target element

Example: <a href="/ext/link?a=b" target="_self">link</a>

So, all you have to do is add the target attribute to your links, like so:

<a href="#anchorLinkID" target="_self">Go to inpage section</a>

Angular defaults to the browser and since its an anchor link and not a different base url, the browser scrolls to the correct location, as desired.

I went with option 3 because its best to rely on native browser functionality here, and saves us time and effort.

Gotta note that after a successful scroll and hash change, Angular does follow up and rewrite the hash to its custom style. However, the browser has already completed its business and you are good to go.