mvc cookie

 Response.Cookies["userName"].Value = "ddd";

 <%
     if (Request.Cookies["userName"] != null)
     {
         HttpCookie aCookie = Request.Cookies["userName"];
         var a =aCookie.Value;
     }
   
    %>

  function getcookie() {             var username = document.cookie.split(";")[0].split("=")[1];

            alert(username);         }