I've used grouping with totals in my report, how to export with group totals and footer totals if applied???

, dom: 'Bfrtip',
                                            buttons:
                                            [
                                                //'copyHtml5',
                                                //'excelHtml5',
                                                //'csvHtml5',
                                                //'pdfHtml5',

                                                {
                                                    extend: 'copyHtml5',
                                                    messageTop:  customMessage
                                                },

                                                {
                                                    extend: 'excelHtml5',
                                                    messageTop:  customMessage
                                                }
                                                ,
                                                {
                                                    extend: 'csvHtml5',
                                                    messageTop:  customMessage
                                                }
                                                ,
                                                {
                                                    extend: 'pdfHtml5',
                                                    messageTop:  customMessage
                                                }
                                            ]
                                            //for export Options Ends here.

Edited by Colin - Syntax highlighting. Details on how to highlight code using markdown can be found in this guide.