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$('#hpcDatatable22 thead tr').clone(true).appendTo('#hpcDatatable22 thead');
    $('#hpcDatatable22 thead tr:eq(1) th').each(function(i) {
      var title = $(this).text();
      $(this).html('<input type="text" placeholder="Search..." />');

      $('input', this).on('keyup change', function() {
        if (table.column(i).search() !== this.value) {
          table
            .column(i)
            .search(this.value)
            .draw();
        }
      });
    });

    // DataTable
    var table = $('#hpcDatatable22').DataTable({
      orderCellsTop: true,
      fixedHeader: true,
      "order": [],
      "columnDefs": [{
        "targets": 'no-sort',
        "orderable": true
      }],
      dom: 'Bfrtip',
      buttons: [
        'copy', 'csv', 'excel', 'pdf', 'print'
      ]
    });
  });