Parsing through a table in an xml object that only has one row retrieved from a database

Parsing through a table in an xml object that only has one row retrieved from a database

Hi i have one record (it will only ever be 1 record or nothing at all) retrieved from a webservice via a ajax() call. The record has 33 fields, a small extract is below:
xml "<Table>
<Supplier>false</Supplier>
<Address>true</Address>
<ProductInformation>true</ProductInformation>
<ProductDetail>true</ProductDetail>
      <29 other columns... >
</Table>" String

I am unsure how to access the column names and the columns values when i iterate through syntax wise as i am still very new to coding in general.

here is the code: 
  1.         function getExistingCheckList() {             var PWNum = 'PW11896';             var testddl = $("#testddl");             $.ajax({                 type: "POST",                 url: "Circuits_OrderManagementTracker.aspx/getAnyChecklistRecords",                 data: "{'PWNum': '" + PWNum + "'}",                 contentType: "application/json; charset=utf-8",                 dataType: "json",                 success: function (response) {                     var xmlDoc = $.parseXML(response.d);                     var xml = $(xmlDoc);                     var CheckListsReturned = xml.find("Table");                     $.each(CheckListsReturned, function (index, CheckListsReturned) {                         ColumnName = $(this).find("WhatGoesHerePlease").????()
                            ColumnName = $(this).find("WhatGoesHerePlease").????()
                             alert(dbname);                         testddl.append('<option>' + ColumnName + '</option>');
                            testddl2.append('<option>' + Columns Value + '</option>');
                         });                 },                 failure: function (msg) {                     alert(msg);                 }             });         }