JSON String Parsing with .ajax()

Question

Hello,

I hope this isn't too confusing, but i think it's fairly basic. I am trying to pre-populate some data into a form, which was previously entered into a form and then populates the form again on a future date (like a save feature)

So when the user SAVES the form, it inputs into the Database JSON data of the entire form fields and their values.

So inside my code I want to loop through each JSON field that matches inside the XML form and DISPLAY the value.

WHICH in the grand scheme I got it working for the most part. But when I was doing testing, I just used a plain JSON formated file which it works great actually.

But now I need the JSON to be placed into a STRING and then do the same formatting.

SO in short, from a JSON file to a JSON String I need to do this same thing. Eek, I hope this makes some sense to someone.

Here is my code so far. Note: myJSON is short valued for what is inside testJSONData.php

var myJSON = '[{ "rep1FullName": "Justin Giesbrecht", "rep1BrokerNumber": "dc" }]';


        $.ajax({
          type: "GET",
          url: "testJSONData.php",
          dataType: "json",
          data: myJSON,
          success: function(data) {

            var j = data[0]; // From the JSON data step into the array []

            $.each(j, function(key, value) {

                // NOW LETS LOOP THROUGH THE FORM XML
                $.ajax({
                  type: "GET",
                  url: "forms/NN0821E/application-form-NN0821E.xml",
                  dataType: "xml",
                  success: function(xml) {

                        $(xml).find("field").each(function() {
                            var formColName = $(this).attr("id");

                            // Find the matching Nodes in the generated xml and the JSON String
                            if(formColName == key) {
                                $("#output").append(formColName +": "+ value +"<br />");
                            } 

                        }); // End of form xml loop

                  },
                  error: function () { alert("Error"); }
                }); // End of form xml

            }); // END OF JSON LOOP


          },
          error: function () { alert("Error"); }
        }); // End of generated json 

Any help would be appreciated! Cheers.