I am able to convert cyclic Object to JSON. Now, i want to convert JSON to cyclic Object
//Cyclic to JSON conversion which works fine
  <script>
    var seatObj;
    seen = []; 
            var replacer = function(key, value) {
              if (value != null && typeof value == "object") {
                if (seen.indexOf(value) >= 0) {
                  return;
                }
                seen.push(value);
              }
              return value;
            };
     seatObj = JSON.stringify(obj.part.data, replacer);
    </script>
 
    