if (window.outerWidth { const currentScroll = (window.scrollY || document.body.scrollTop || document.documentElement.scrollTop) console.log('scrollY, currentScroll: ', scrollY, currentScroll) if (scrollY > currentScroll) { // going up if (scrollY lowerBound) { jQuery('.lite-header').addClass('lite-header--hide') } } scrollY = currentScroll }); }