<script type="text/javascript" data-author="Tony Partner">  
  $(document).on('ready pjax:scriptcomplete',function(){
    randomArrayNumCols2({QID});
  });
 
  // A function to randomize columns in an array-numbers question leaving the last column in place
  function randomArrayNumCols2(qID){
 
    var thisQuestion = $('#question'+qID);
 
    // Index the array columns and identify the last column
    $('table.subquestion-list tr', thisQuestion).each(function(i) {
      $('> *', this).each(function(i) {
        $(this).attr('data-index', i);
      });
 
      $('> *:last', this).addClass('last-item');
    });
 
    // Create an array of the columns
    var columns = [];
    $('table.subquestion-list tr[id^="javatbd"]:eq(0) td.answer-item', thisQuestion).each(function(i) {
      columns.push($(this).attr('data-index'));
    });
 
    // Shuffle the columns array
    columns = $.shuffle(columns);
 
    // Reposition the row elements
    $('table.subquestion-list tr', thisQuestion).each(function(i) {
      var thisRow = $(this);
      $(columns).each(function(i, val) {
        thisRow.append($('[data-index="'+val+'"]', thisRow));
        thisRow.append($('.col-no-answer', thisRow));
      });
      thisRow.append($('.last-item', thisRow));
    });
  }
 
  // A function to shuffle elements or contents of arrays
  (function($){
    $.fn.shuffle = function() {
      return this.each(function(){
        var items = $(this).children();
        return (items.length)
          ? $(this).html($.shuffle(items))
          : this;
      });
    }
 
    $.shuffle = function(arr) {
      for(
        var j, x, i = arr.length; i;
        j = parseInt(Math.random() * i),
        x = arr[--i], arr[i] = arr[j], arr[j] = x
      );
      return arr;
 
    }
  })(jQuery);
</script>

<script type="text/javascript" data-author="Tony Partner">
  $(document).ready(function() {
    // Call the exclude function using question ID
    excludeOpt({QID});
  });
 
  // A function to make the last option in each array row exclusive
  function excludeOpt (qID) {
 
    var thisQuestion = $('#question'+qID)
 
    // Add some classes to the checkbox cells
    $('td.checkbox-item', thisQuestion).addClass('normal-item');
    $('tr.subquestion-list', thisQuestion).each(function(i) {
      $('.normal-item:last', this).removeClass('normal-item').addClass('exclusive-item')
    });
 
    // A listener on the checkboxes
    $('input[type="checkbox"]', thisQuestion).on('change', function (event) {
      handleExclusive($(this));
    });
 
    function handleExclusive(thisInput) {
 
      var thisCell = $(thisInput).closest('td'); 
      var thisRow = $(thisCell).closest('tr');
 
      $('input[type="checkbox"]', thisRow).prop('disabled', false);
 
      if(thisInput.is(':checked')) {
        // Uncheck the appropriate boxes in a row
        if ($(thisCell).hasClass('normal-item')) {
          $('.exclusive-item input[type="hidden"]', thisRow).val('');
          $('.exclusive-item input[type="checkbox"]', thisRow).prop('checked', false);
        }
        else {
          $('.normal-item input[type="hidden"]', thisRow).val('');
          $('.normal-item input[type="checkbox"]', thisRow).prop('checked', false).prop('disabled', true);
        }
 
        // Check conditions (relevance)
        $('td.checkbox-item', thisRow).each(function(i) {
          var thisValue = '';
          if($('input[type="checkbox"]', this).is(':checked')) {
            thisValue = 1;
          }
          var thisSGQA = $('input[type="checkbox"]', this).attr('id').replace(/cbox_/, '');
 
          $('input[type="hidden"]', this).attr('value', thisValue);
          fixnum_checkconditions(thisValue, thisSGQA, 'hidden');
        });
      }
    }
  }
</script>