https://www.nonsawan.com/2020/wp-content/themes/covernews/assets/fixed-header-script.js?ver=7.4.0

1jQuery(document).ready(function ($) {
2
3
4    // Here You can type your custom JavaScript...
5
6    var header = document.getElementById("site-navigation");
7    var masthead = document.getElementById("masthead");
8    var body = document.querySelector("body");
9    if (header) {
10
11
12        // window.onscroll = function () {
13        //     myFunction()
14        // };
15
16        var stickyheight = header.offsetHeight;
17        var sticky = header.offsetTop + stickyheight;
18        function myFunction() {
19
20            if (window.pageYOffset > sticky) {
21                header.classList.add("aft-sticky-navigation");
22            } else {
23                header.classList.remove("aft-sticky-navigation");
24            }
25
26            if (header.classList.contains("aft-sticky-navigation")) {
27                masthead.style.paddingBottom = stickyheight + "px";
28            } else {
29                masthead.style.paddingBottom = 0;
30            }
31        }
32    }
33
34
35    var didScroll;
36    var lastScrollTop = 0;
37    var delta = 5;
38    var navbarHeight = $('#site-navigation').outerHeight();
39
40    $(window).on('scroll', function (event) {
41        didScroll = true;
42    });
43
44    setInterval(function () {
45        if (didScroll) {
46            hasScrolled();
47            didScroll = false;
48        }
49    }, 250);
50
51    function hasScrolled() {
52        var st = $(this).scrollTop();
53
54        // Make sure they scroll more than delta
55        if (Math.abs(lastScrollTop - st) <= delta)
56            return;
57
58        // If they scrolled down and are past the navbar, add class .nav-up.
59        // This is necessary so you never see what is "behind" the navbar.
60        if (st > lastScrollTop && st > navbarHeight) {
61            // Scroll Down
62            if (body.classList.contains("scrolldown-sticky-header") || body.classList.contains("scrollboth-sticky-header")) {
63                myFunction();
64                $('#site-navigation').removeClass('nav-down').addClass('nav-up');
65            } else {
66                $('#site-navigation').removeClass('nav-down').addClass('nav-up');
67            }
68
69        } else {
70            // Scroll Up
71
72            if (st + $(window).height() < $(document).height()) {
73                if (header)
74                {
75                    myFunction();
76                    $('#site-navigation').removeClass('nav-up').addClass('nav-down');
77                }
78                
79
80
81            }
82        }
83        lastScrollTop = st;
84    }
85
86});