Filter Object Array

HTML

<script src="http://getfirebug.com/releases/lite/1.2/firebug-lite-compressed.js"></script>

JavaScript

var z = [
   {
      "surveyInstanceId":"1481",
      "questionOrderNumber":"1",
      "questionId":"1300",
      "hidden":false,
      "questionMinResponses":"0",
      "questionRequired":false,
      "questionType":"Caption",
      "questionText":"<p>This is a question that is a caption. It is located in the <strong>wysiwyg</strong> editor so the styling can be handled there. </p>",
      "questionMaxResponses":"0",
      "categoryId":"1",
      "key":null
   },
   {
      "surveyInstanceId":"1481",
      "questionOrderNumber":"2",
      "questionId":"1301",
      "hidden":false,
      "questionMinResponses":"0",
      "questionRequired":true,
      "questionTypeData":{
         "consRegInfoData":{
            "layout":"VERTICAL",
            "passwordComponent":null,
            "full_name_row_label":null,
            "city_state_zip_row_label":null,
            "contactInfoField":[
               {
                  "fieldName":"cons_first_name",
                  "fieldStatus":"REQUIRED",
                  "label":"First Name:"
               },
               {
                  "fieldName":"cons_last_name",
                  "fieldStatus":"REQUIRED",
                  "label":"Last Name:"
               },
               {
                  "fieldName":"cons_email",
                  "fieldStatus":"REQUIRED",
                  "label":"Email:"
               },
               {
                  "fieldName":"cons_postal_opt_in",
                  "fieldStatus":"DEFAULT",
                  "label":"Yes, I would like to receive postal mail from University Hospitals"
               },
               {
                  "fieldName":"cons_email_opt_in",
                  "fieldStatus":"DEFAULT",
                  "label":"Yes, I would like to receive email from University Hospitals"
               },
               {
                  "fieldName":"cons_title",
                  "fieldStatus":"REQUIRED",
                  "fieldOptionValues":[
                  ...