<label for="team"><center>Scegli un materiale:</center></label>
                        <select id="team" name="team">
                <option value="">Effettua una selezione</option>
                <option value="ABS">ABS (302)</option>
                <option value="PBT">PBT (PTMT) (322)</option>
                <option value="PPS">PPS (319)</option>
              </select>
                    </div>
                </div>
            </div>
                        <div id="tabella"></div>
                        <script src="https://code.jquery.com/jquery-3.4.1.js"></script>
                        <script>
                            $(document).on("change", "#team", function() {
                                var team = $(this).val();

                                if (team !== '') {
                                    $.ajax({
                                        type: "post",
                                        url: 'tabelle.php',
                                        data: 'team='+JSON.stringify(team),
                                        dataType: 'html',
                                        success: function(response) {
                                            $('#tabella').html(response);
                                        },
                                        error: function(response) {
                                            $('#tabella').html('<br />ERRORE : il server non risponde o lo ha fatto in modo anomalo '+response.responseText);
                                        }
                                    });
                                }
                            });
                        </script>