the below code is written in javascript, is it possible to convert the same code into JSP by using the expression tag <% %>.

            var d3="${docbean.dateStartDate}";
            var d4="${docbean.dateEndDate}";
            const d1 = new Date(d3);
            const d2 = new Date(d4);
            var months;
            months  = (d2.getFullYear() - d1.getFullYear()) * 12;
            months -= d1.getMonth();
            months += d2.getMonth();
            months=months+1;
            const d6=new Date(2021, 11, 0).getDate();
            document.getElementById("demo1").innerHTML months+d6;

If there are any other means of converting the above javascript code to JSP, then pls let me know the process. Thanks.