너는 진정 전자인을 아는가?

http://leaderscpa.com/merchant/barunhome/

https://www.w3schools.com/code/tryit.asp?filename=GAIKR3AY2JSD

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>

    function select_top(cc){
$(".motors_option_car007").hide();
$("#motors_option_car_"+cc).show();
}
    
</script>


<div class="select-category-box">

<!-- 첫번째 셀렉트박스는 차종별 -> 2차메뉴들 입니다. -->
<!-- 첫번째 셀렉트 박스 시작 -->
<div class="select-box" id="car_companys">
                             <select name="company" id="cate_option_car007" onchange="select_top(this.value);">
                                <option value="">선택</option>
                                <option value="007001">현대</option>
                                <option value="007002">기아</option>
                                <option value="007003">쉐보레</option>
                                </select></div>
<!-- 첫번째 셀렉트 박스 끝 -->

<!-- 두번째 셀렉트박스는 차종별 -> 2차메뉴 -> 3차메뉴 -> 4차메뉴들 입니다. -->
<!-- 두번째 셀렉트 박스 시작 -->
<div class="select-box" id="sel_motors">
                             <select class="motors_option_car007" name="motors" id="motors_option_car_007001" onchange="car_model_select_top('007001');" style="display: inline-block;">
                                <option value="">선택</option>
                                <option id="i30" value="007001001">i30</option>
                                <option id="i30(뉴)(12~)" value="007001002">i30(뉴)(12~)</option>
                                <option id="i40" value="007001003">i40</option>
                                </select>
                                <select class="motors_option_car007" name="motors" id="motors_option_car_007002" onchange="car_model_select_top('007002');" style="display: none;">
                                <option value="">선택</option>
                                <option id="K5" value="007002001">K5</option>
                                </select>
                                </div>
<!-- 두번째 셀렉트 박스 끝 -->
</div>

user 설정

INSERT INTO mysql.user (Host, User, Password, Select_priv, Insert_priv, Update_priv, Delete_priv, Create_priv, Drop_priv, Reload_priv, Shutdown_priv, Process_priv, File_priv, Grant_priv, References_priv, Index_priv,
 Alter_priv, Show_db_priv, Super_priv, Create_tmp_table_priv, Lock_tables_priv, Execute_priv, Repl_slave_priv, Repl_client_priv, Create_view_priv, 
 Show_view_priv, Create_routine_priv, Alter_routine_priv, Create_user_priv, Event_priv, Trigger_priv, ssl_type,ssl_cipher, max_questions, 
 max_updates, max_connections, MAX_USER_CONNECTIONS,x509_issuer,x509_subject,authentication_string) 
VALUES ('localhost', 'stk5', PASSWORD('stk5'), 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 
'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', '','', '0', '0', '0', '0','','','');

db설정

INSERT INTO mysql.db 
(Host, Db, User, Select_priv, Insert_priv, Update_priv, Delete_priv, Create_priv, Drop_priv, Grant_priv, References_priv, Index_priv, Alter_priv, Create_tmp_table_priv, Lock_tables_priv, Create_view_priv, Show_view_priv, Create_routine_priv, Alter_routine_priv, Execute_priv, Event_priv, Trigger_priv) 
VALUES
('localhost', 'stk5', 'stk5', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y', 'Y');

mysql 재시작

flush privileges;