javascript - Getting values from database on select dropdown in textbox -

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please answer below question

i want details database on select of option , display values of related select option accordingly

 <table border="1" class="form" id="datatable">             <tbody>                 <tr class="vd_bg-green vd_white" id='row_0'>                     <td><input name="chk" type="checkbox"></td>                     <td><select id="product_name" name="product_name" oninput=                     "calculate('row_0')" required="" style="width: 180px; color: black">                     <option>//options database</option>                     </select></td>                     <td><input id="description" maxlength="70" name="description" oninput=                     "calculate('row_0')" required="" style="width: 260px; color: black" type=                     "text"></td>                     <td><input id="price" name="price" oninput="calculate('row_0')" required=""                     style="width: 80px; color: black" type="text"></td>                     <td><input id="quantity" name="quantity" oninput="calculate('row_0')"                     required="" style="width: 40px; color: black" type="text"></td>                     <td><input id="disc_rate" name="disc_rate" oninput="calculate('row_0')"                     required="" style="width: 40px; color: black" type="text"></td>                     <td><input id="total_pro" name="total_pro" onchange="calculate('row_0')"                     readonly="readonly" style="width: 80px; color: black" type="text"></td>                 </tr>             </tbody>         </table>

you can start learning ajax , server side scripting. create server side code. pass selected value ajax. results database. show result in text box.


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