https://abstractlogix.com/wp-content/themes/soundrise/js/iron-parallax.js

1/* global jQuery */
2"use strict";
3var iron_parallax = function(){
4	if ( jQuery(document).width() >= 1024 ) {
5
6		jQuery(document).on('scroll', function() {
7
8			var $scrollTop = jQuery(document).scrollTop();
9			var $bannerHeight = jQuery('.parallax-banner').height();
10			if ($scrollTop < $bannerHeight ) {
11
12				var $bannerFromTop = Math.pow(( ( $bannerHeight - $scrollTop ) / $bannerHeight ), 1.2);
13
14		        jQuery('.page-banner-bg').velocity({
15		        	translateZ: 0,
16		        },{ duration: 0 });
17
18		        jQuery('.page-banner-content').velocity({
19		        	translateZ: 0,
20		            translateY: $scrollTop * 0.7+"px",
21		            opacity: $bannerFromTop
22		        },{ duration: 0 });
23
24			}
25
26		});
27
28	}
29}
30
31jQuery(document).ready(function() {
32	iron_parallax()
33});