<script type="text/javascript">
 
  $(document).ready(function() {
 
    // A function to show subsequent rows of an array as options are checked
    function expandingArray(qID) {
 
      // Build an array of the question rows
      var arrayRow = '#question' + qID + ' table.question tbody tr';
 
      // Initially hide all rows unless an input was previously checked
      $( arrayRow ).each(function(i) {
 
        if ( $( arrayRow  + ':eq(' + i + ') input.radio:checked' ).length != 0 ) {
          $(this).attr('name', 'clickedRow');
        }
        else {
          $(this).attr('name', 'hidden').hide();
        }
      });
 
      // Now show the first hidden row
      addRow();
 
      // Add another row when an option is checked for the first time
      $( '#question' + qID + ' td.answer input.radio' ).click(function (event) {
 
        if ($(this).parents('tr:eq(0)').attr('name') != 'clickedRow') {
          addRow();
          $(this).parents('tr:eq(0)').attr('name', 'clickedRow');
        }
 
        // The original function of the click event
        checkconditions(this.value, this.name, this.type);
      });
 
      // Add another row when an table cell is clicked for the first time
      $( '#question' + qID + ' table.question tbody td' ).click(function (event) {
 
        if ($(this).parents('tr:eq(0)').attr('name') != 'clickedRow') {
          addRow();
          $(this).parents('tr:eq(0)').attr('name', 'clickedRow');
        }
      });
 
      // Function to add a row
      function addRow() {
        $( arrayRow + '[name="hidden"]:first' ).attr('name', 'visible').show();
        // Now, scroll down
        $("html, body").animate({ scrollTop: $(document).height() }, 1000);
      }
    }
 
    // Call the function with a question ID
    expandingArray(QQ);
 
  });
</script>

var arrayRow = '#question' + qID + ' table.question tbody tr';

var arrayRow = '#question' + qID + ' table.ls-answers tbody tr';

$( '#question' + qID + ' table.question tbody td' ).click(function (event) {

$( '#question' + qID + ' table.ls-answers tbody td' ).click(function (event) {

$(this).parents('tr:eq(0)').attr('name', 'clickedRow');
// if you also want to hide the answered row:
$(this).parents('tr:eq(0)').attr('name', 'clickedRow').hide();

$(this).parents('tr:eq(2)').attr('name', 'ls-heading').hide();

<script type="text/javascript" charset="utf-8">
 
  $(document).on('ready pjax:scriptcomplete',function(){
 
    var thisQuestion = $('#question{QID}');
 
    // Initially hide all but the first row
    $('tr.answers-list:gt(0)', thisQuestion).hide();
 
    // Listener on the radios
    $('input:radio', thisQuestion).on('click', function(e) {
      var thisRow = $(this).closest('tr');
      var nextRow = $(thisRow).next('tr.answers-list');
 
      if(nextRow.length > 0) {
        // Hide this row and show the next
        $(thisRow).fadeOut(300, function(e) {
          $(nextRow).fadeIn(300);
        });
      }
      else {
        // No next row so hide the table
        $('table.ls-answers', thisQuestion).fadeOut(300);
      }
    });
  });
</script>