Slick-slider mousewheel

main.js

var slickCarousel= $('.serviceSlider');
    slickCarousel.slick({
        slidesToShow: 1,
        slidesToScroll: 1,
        arrows: false,
        fade: true,
        autoplay: false,
        dots:true,
        infinite:false,
        adaptiveHeight: true,
    });


    slickCarousel.mousewheel(function(e) {
        e.preventDefault();
        if (e.deltaY < 0) {
            $(this).slick('slickNext'); 
        }
        else {
            $(this).slick('slickPrev');
        }
    });