I"N(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");
        console.log(headers);
        selected = $(this).find(":selected");
        not_selected = $(this).find("not(:selected)");
        console.log(selected);
        return console.log(not_selected);
      });
    });
  });

}).call(this);
:ET