<script type="text/javascript" data-author="DBEL">
  $(document).ready(function() {
    // Call the exclude function using question ID
    excludeOpt({QID});
  });
 
  // A function to set up exclusivity
  function excludeOpt(qID) {
    var thisQuestion = $('#question' + qID);
 
    // Set up exclusivity for each row
    thisQuestion.find('tr.subquestion-list').each(function() {
      setupRowExclusivity($(this));
    });
 
    // A listener on the checkboxes
    thisQuestion.find('input[type="checkbox"]').on('change', function(event) {
      handleExclusive($(this));
    });
 
    function setupRowExclusivity(row) {
      row.find('td.checkbox-item').each(function(index) {
        if (index === 1) {
          $(this).addClass('exclusive-item');
        } else if (index === 0) {
          $(this).addClass('neutral-item');
        } else {
          $(this).addClass('normal-item');
        }
      });
 
      $('.exclusive-item input[type="hidden"]', row).val('');
 
      // Initially disable the normal items
      $('.normal-item input[type="checkbox"]', row).prop('disabled', true);
    }
 
    function handleExclusive(thisInput) {
      var thisCell = thisInput.closest('td');
      var thisRow = thisInput.closest('tr');
 
      if ($(thisCell).hasClass('neutral-item')) {
        // Do nothing or add specific logic for the neutral item
      } else if ($(thisCell).hasClass('exclusive-item')) {
        // If exclusive item is checked, enable/disable normal items accordingly
        var normalItems = $('.normal-item input[type="checkbox"]', thisRow);
        normalItems.prop('disabled', !thisInput.is(':checked'));
        if (!thisInput.is(':checked')) {
          normalItems.prop('checked', false);
        }
      }
 
      // Check conditions (relevance)
      $('td.checkbox-item', thisRow).each(function() {
        var thisValue = $('input[type="checkbox"]', this).is(':checked') ? 1 : '';
        var thisSGQA = $('input[type="checkbox"]', this).attr('id').replace(/cbox_/, '');
 
        $('input[type="hidden"]', this).attr('value', thisValue);
        fixnum_checkconditions(thisValue, thisSGQA, 'hidden');
      });
    }
  }
</script>

<script type="text/javascript" data-author="Tony Partner">
 
    $(document).on('ready pjax:scriptcomplete',function(){
 
        var thisQuestion = $('#question{QID}')
 
        // Add some classes to the checkbox cells
        // 3rd children (answer column 2)
        $('td.checkbox-item:nth-child(3)', thisQuestion).addClass('exclusive-item');        
        // 4th and above children (answer columns greater than 2)
        $('td.checkbox-item:nth-child(n+4)', thisQuestion).addClass('excluded-item');
 
        // A listener on the exclusive checkboxes
        $('.exclusive-item input:checkbox', thisQuestion).on('change', function (event) {
            handleExclusive($(this));
        });
 
        // Returning to page
        $('.exclusive-item input:checkbox', thisQuestion).each(function (i) {
            handleExclusive($(this));
        });
 
        function handleExclusive(thisInput) {
 
            var thisCell = $(thisInput).closest('td'); 
            var thisRow = $(thisCell).closest('tr');
 
            if(thisInput.is(':checked')) {
                // Enable the excluded checkboxes
                $('.excluded-item input:checkbox', thisRow).prop('disabled', false);
            }
            else {
                // Uncheck the excluded boxes in a row
                $('.excluded-item input[type="hidden"]', thisRow).val('');
                $('.excluded-item input:checkbox', thisRow).prop('checked', false).trigger('change').prop('disabled', true);
            }
        }
    });
</script>