<script type="text/javascript" charset="utf-8">
 
  $(document).ready(function(){
 
    $('#questionQQ select').each(function(i) {
      if($(this).val() == '') {
        $('option[value!=""]:first', this).attr('selected', 'selected');
      }
    });
  });
 
</script>

<script type="text/javascript" charset="utf-8">
// Once document is loaded
$(document).ready(function () {
 
    // HTTP request to get chat bot parameters
    let httpReq = new XMLHttpRequest();
    httpReq.open("GET", "www.URL.com", true);
    httpReq.send();
    httpReq.onreadystatechange = function () {
        if (httpReq.readyState === 4 &amp;&amp; httpReq.status === 200) {
            const response = httpReq.responseText;
            const obj = JSON.parse(response);
            console.log(obj);
 
            const dropDownSelection = "A" + obj.experimentGroup;
 
            $('#question30059 select').each(function(i) {
                if($(this).val() == "") {
                    $('option[value==' + dropDownSelection + ']', this).attr('selected', 'selected');
                }
            });
 
        }
    };
});
</script>

$('option[value!=""]:first', this).attr('selected', 'selected');

$('#question{30055} input[type="text"]').val([obj.pricePath]);

$('#question{QID} select').val(yourVariable);