I need to know if the result of the datatable ajax table is empty or not. I tried several method but with no result. The table calls ajax file so it's serverside. My code is:

$(document).ready(function() {
      $.fn.dataTable.moment('DD/MM/YYYY');
      var dataTable = $('#contenitori-grid').DataTable({
        responsive: true,
        columnDefs: [{
          targets: 0,
          render: function(data, type, row) {
            return '<span>' + data + '</span>'
          }
        }],

        dom: 'Bfrtip',
        language: {
          "zeroRecords": "Nessun dato trovato",
          "infoEmpty": "",
          "sLengthMenu": "Mostra _MENU_  contenitori per pagina",
          processing: '<i class="fa fa-spinner fa-spin fa-3x fa-fw"></i><span class="sr-only">Loading...</span> '
        },
        "responsive": true,
        "lengthChange": false,
        "autoWidth": false,
        "processing": true,
        "serverSide": true,
        "stateSave": false,
        "searching": true,
        "order": [
          [0, "desc"]
        ],
        "ajax": {
          url: "ajaxfile.php",
          type: "post",
          error: function() {

          }

        }
      });