I"�(function() {
  $(function() {
    return $("[data-select-columns]").each(function() {
      return $(this).on('change', function() {
        var headers, not_selected, selected, table, table_selector;
        table_selector = $(this).data('select-columns-target');
        table = $(table_selector);
        headers = $(table_selector + " th");
        selected = $(this).find(":selected");
        not_selected = $(this).find(":not(:selected)");
        console.log(headers);
        console.log(selected);
        console.log(not_selected);
        selected.each(function() {
          var column_index, th_id;
          th_id = $(this).attr('value');
          column_index = $(table_selector + " tbody tr:first th").index(th_id);
          return $(table_selector + " td:nth-child(" + column_index + ")").show();
        });
        return not_selected.each(function() {
          var column_index, th_id;
          th_id = $(this).attr('value');
          column_index = $(table_selector + " tbody tr:first th").index(th_id);
          return $(table_selector + " td:nth-child(" + column_index + ")").hide();
        });
      });
    });
  });

}).call(this);
:ET