Timing Chain Kits

Timing Chain Kits

Category: Engine Components

let lastScrollPosition = window.pageYOffset; window.addEventListener('scroll', function() { const currentScrollPosition = window.pageYOffset; if (currentScrollPosition > lastScrollPosition) { // Scrolling down document.body.classList.add('scroll-down'); document.body.classList.remove('scroll-up'); } else { // Scrolling up document.body.classList.add('scroll-up'); document.body.classList.remove('scroll-down'); } lastScrollPosition = currentScrollPosition; });