datatables.js导出身份证号问题

{
    extend: 'excel',
    text: '<i class="fa fa-file-excel-o"></i> 导出为Excel',
    exportOptions: {
        //columns: ':visible',
        format: {
            body: function(data, row, column, node) {
                return column === 2 ? "\0" + data: data;
            }
        }

    }