选择时间日期为什么跳转之后不能保留效果

Question

}).delegate(".c", "click", function (e) {
                e.preventDefault();
                $(".c").removeClass('active');

                var date=$(this).attr('date-id');
                $("#date").val(date);
                $(this).addClass('active');
                
                var frm = $("#gz-appontment-index-frm-id");

$.ajax({
                    type: "POST",
                    data: frm.serialize(),
                    url: gz_appontment_install_folder + "load.php?controller=GzFront&action=booking_Time",
                    success: function (res) {
                         $('#gz-appontment-main-container').html(res);
                         $(this).addClass('active');//这个是样式
                    }
                });