12306隐藏属性

<select name="passenger_1_seat_detail_select"
                style="display: none"
                id="passenger_1_seat_detail_select"
                onchange="setSeatDetail('1')">
                    <option value='0'
                        >随机</option>
                    <option value='3'
                        >上铺</option>
                    <option value='2'
                        >中铺</option>
                    <option value='1'
                        >下铺</option>
            </select>