mouseenter, mouseleave / on

        $(document).on({
            mouseenter: function () {
                $(this).addClass('border-primary');
                $(this).addClass('border-2');
                $(this).addClass('fw-bold');
            },
            mouseleave: function () {
                $(this).removeClass('border-primary');
                $(this).removeClass('border-2');
                $(this).removeClass('fw-bold');
            }
        }, '.sideNavDiv');