https://timegoat.app/assets_frontend/js/scrollspy.js

1function ScrollingSpy(settings) {
2    this.options = settings;
3
4    var $this = this,
5        navbar = $(this.options.navbar);
6
7    this.navbarSticky = function(scrollTop) {
8        if (scrollTop >= this.options.offset) {
9            navbar.addClass("navbar-sticky")
10        } else {
11            navbar.removeClass("navbar-sticky")
12        }
13    };
14
15    this.pricingSticky = function(scrollTop, pricingPlansTop) {
16        if (scrollTop >= pricingPlansTop && scrollTop < (pricingPlansTop + $($this.options.pricingStickyElement).height())) {
17            setTimeout(function() {
18                $($this.options.pricingBasis).addClass('keep-sticky');
19            }, 500);
20        } else {
21            setTimeout(function() {
22                $($this.options.pricingBasis).removeClass('keep-sticky');
23            }, 500);
24        }
25    };
26
27    this.initialize = function() {
28        var w = $(window);
29
30        w.on("scroll", function() {
31            var scrollTop = w.scrollTop();
32
33            $this.navbarSticky(scrollTop);
34
35            if (w.width() <= 768) {
36                var pricingPlansTop = $($this.options.pricingBasis).length ? $($this.options.pricingStickyElement).offset().top - $this.options.offset : null;
37                if (pricingPlansTop) {
38                    $this.pricingSticky(scrollTop, pricingPlansTop);
39                }
40            }
41        });
42
43        this.navbarSticky(w.scrollTop());
44        if (w.width() <= 768) {
45            this.pricingSticky(w.scrollTop());
46        }
47    }
48}