See the example here >> https://stackoverflow.com/questions/34498929/check-mousewheel-event-direction-with-scroll-locked and here >> https://jsfiddle.net/adeneo/Lwp3c5br/

Mouse Up and Down event.js

$(document).on('DOMMouseScroll mousewheel', function(e) {
    var moved = e.originalEvent.wheelDelta || e.originalEvent.detail * -1 || 0;

    if (moved > 0) {
        // scrolled up
    } else if (moved < 0) {
        // scrolled down
    }

});