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November 3, 2019 09:39
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| let lastScrollTop = 0 | |
| $(window).scroll(function(event) { | |
| const st = $(this).scrollTop() | |
| if (st > lastScrollTop) { | |
| // downscroll code | |
| } | |
| else { | |
| // upscroll code | |
| if (window.scrollY <= 100) { | |
| $('.back-to-top-button').fadeOut() | |
| } else { | |
| $('.back-to-top-button').fadeIn() | |
| } | |
| } | |
| lastScrollTop = st | |
| }) |
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