title: Gravity Forms Find Sum of List Column
body: <p>I am attempting to calculate the total sum of a list column in Gravity Forms, 
  unfortunately this is not a feature that is included in the main plugin, so I have had to find a different source to accomplish this. I was able to find a script that is supposed to accomplish this, available here,
  <a href="https://jsfiddle.net/c0hjmo4w/" rel="nofollow">jsFiddle</a></p>
  
  <pre><code>function calculateLFColumnTotal(formId, columnClass, totalFieldId, currency) {
  var columnTotal = 0,
      preField = '#field_' + formId + '_' + totalFieldId,
      totalField = jQuery('#input_' + formId + '_' + totalFieldId),
      cellValue;
  currency = (currency &amp;&amp; typeof gf_global !== 'undefined');
  jQuery(columnClass).each(function () {
      cellValue = jQuery(this).val();
      cellValue = (currency) ? gformToNumber(cellValue) : cellValue;
      columnTotal += parseFloat(cellValue) || 0;
  });x
  if (jQuery(preField).hasClass('gfield_price')) {
      columnTotal = gformFormatMoney(columnTotal);
      if (jQuery(preField + ' input').length &gt; 1) {
          totalField.html(columnTotal);
          totalField = jQuery('input[name="input_' + totalFieldId + '.2"]');
      }
  } else {
      columnTotal = (currency) ? gformFormatMoney(columnTotal) : columnTotal;
  }
  totalField.val(columnTotal).change();
  gformCalculateTotalPrice(formId);
  }
      function listFieldColumnTotal(formId, fieldId, column, totalFieldId,       currency) {
  var listField = '#field_' + formId + '_' + fieldId,
      columnClass = '.gfield_list_' + fieldId + '_cell' + column + ' input';
  jQuery(listField).on('blur', columnClass, function () {
      if (currency &amp;&amp; typeof gf_global !== 'undefined') {
          gformFormatPricingField(this);
      }
      calculateLFColumnTotal(formId, columnClass, totalFieldId, currency);
  });
  jQuery(listField).on('click', '.add_list_item', function () {
      jQuery(listField + ' .delete_list_item').removeProp('onclick');
  });
  jQuery(listField).on('click', '.delete_list_item', function () {
      gformDeleteListItem(this, 0);
      calculateLFColumnTotal(formId, columnClass, totalFieldId, currency);
  });
  }
   listFieldColumnTotal( 140, 1, 3, 3, true );
  </code></pre>
  
  <p>However, I am unsure of which elements I should be changing and which should be left as is. If anyone has experience with this, and can guide me in the right direction, that would be great. </p>