AngularJS 'scrollTop' equivalent?

Question

I'm looking to implement something similar to this in an AngularJS directive:

https://github.com/geniuscarrier/scrollToTop/blob/master/jquery.scrollToTop.js

It's fairly straightforward, when you are not at the top of the page it will fade in a button to scroll to the top:

$(window).scroll(function() {
  if ($(this).scrollTop() > 100) {
    $this.fadeIn();
  } else {
    $this.fadeOut();
  }
});

However I'm having a hard time finding how to get the current scroll location in Angular. I'd rather not have to use jQuery just for this single thing.

Answer 1

$window.pageYOffset

This is property from service $window

Answer 2

I don't believe there's anything in Angular to get the scroll position. Just use plain vanilla JS.

You can retrieve the scrollTop property on any element.

https://developer.mozilla.org/en-US/docs/Web/API/Element.scrollTop

document.body.scrollTop

Fiddle for you: http://jsfiddle.net/cdwgsbq5/