Looping through js array and variable assignment doesn't work

I have a price of js code, which has been troubling me since last few days, below is the piece of code, the problem is during the handling of the ajax response. The strange thing about this code is it works fine on my local machine, but does not work correctly in the online server, I have commented the issues by the code.

The strange thing about this code is , when I put it up online, the currField and the tempfieldDivId variables don't work at all and the temp variable(which I added for debugging) is printed in the alert with the correct value. But it fail开发者_StackOverflows in the switch case. And in the switch it always falls to the the default option and prints "No match" .

 $.ajax({
                type: "POST",
                url: "components/form/form_processing.php",
                data: dataStringfrmFlds,
                cache:false,
                success: function(opt){

                    alert(opt);// opt is fine, returns:  ship_to,first_notify_party,consignee,shipment_type,packaging_requirements,testing_requirements,date,request_expected_date,order_ponunber

                    var defaultFields = opt.split(',');
                    var numFields = defaultFields.length;

                    for(i = 0; i < numFields; i++){
                          var temp              = "";   

                          var currField         = defaultFields[i];
                          var tempfieldDivId    = "def_"+currField;

                          //these doesnt work
                          $(tempfieldDivId).show();
                          $('#'+currField).attr('required','required');

                           temp = currField;
                           alert(temp); //this does print the field name in the alert   

                           //these doesnt work either      
                           switch(temp){

                                 case "os_id":
                                 $("#def_os_id").show();
                                 break;

                                 case "ff_id":
                                 $("#def_ff_id").show();
                                 break;

                                 case "fnp_id":
                                 alert("HI there");
                                 $("#def_fnp_id").show();
                                 break;

                                 case "cinfo_id":
                                 $("#def_cinfo_id").show();
                                 break;

                                 case "order_date":
                                 $("#def_order_date").show();
                                 break;

                                 case "order_shiptype":
                                 $("#def_order_shiptype").show();
                                 break;

                                 case "order_portdis":
                                 $("#def_order_portdis").show();
                                 break;

                                 case "order_requestform":
                                 $("#def_order_requestform").show();
                                 break;

                                 case "order_specialinstructions":
                                 $("#def_order_specialinstructions").show();
                                 break;

                                 case "order_packreq":
                                 $("#def_order_packreq").show();
                                 break;

                                 case "order_testreq":
                                 $("#def_order_testreq").show();
                                 break;

                                 case "order_reqexdate":
                                 $("#def_order_testreq").show();
                                 break;

                                 default:
                                alert("No match");//this is printed out all the times
                                 break;
                               }//end of switch
                        }//end of for loop
                  }
            });

I would be very grateful if anyone can help me on this. Thank you.

1. $(tempfieldDivId).show(); do you need to add a "#" before tempfieldDivId?
2. opt is ship_to,first_notify_party,consignee,shipment_type,packaging_requirements,testing_requirements,date,request_expected_date,order_ponunber I didn't see any of them match any case in your switch statement, of course it will fall down to default every time.