Function callback

libs/datatables-binding-0.18/datatables.js:1136–1151

()

            table.columns(selected2).nodes().flatten().to$().addClass(selClass);
        }
        var callback = function() {
          var colIdx = selTarget === 'column' ? table.cell(this).index().column :
              $.inArray(this, table.columns().footer()),
              thisCol = $(table.column(colIdx).nodes());
          if (colIdx === -1) return;
          if (thisCol.hasClass(selClass)) {
            thisCol.removeClass(selClass);
            selected2.splice($.inArray(colIdx, selected2), 1);
          } else {
            if (selMode === 'single') $(table.cells().nodes()).removeClass(selClass);
            thisCol.addClass(selClass);
            selected2 = selMode === 'single' ? [colIdx] : unique(selected2.concat([colIdx]));
          }
          selectCols(false); // update selected2 based on selectable
          changeInput('columns_selected', selected2);
        }
        if (selTarget === 'column') {
          $(table.table().body()).on('click.dt', 'td', callback);
        } else {