confirmation tab does not show up

Question

So i have created a form. Upon submitting that form, i created a confirmation tab so that the user can confirm his inputs. once the user confirms the inputs, the form will be submitted.

So i have added jquery to display the confirmation tab however, when i click the button to show the confirmation tab, the form just clears up and the confirmation tab is not seen... please find below the codes

HTML

<div class="tab-content">
  <fieldset class="tab-pane active" id="form_tab">
      <form id="poform" method="GET">
         <table>
               <tr>  
                    <th colspan="2"><div class="header_3">Pre-Order Form</div></th>
               </tr>
               <tr>  
                    <td><label>Account Number:</label></td>
                    <td><input type="text" name="accountnumber" id="accountnumber" value="" required/></td>
               </tr>
               <tr>  
                    <td><label>Trade:</label></td>
                    <span class="text_11">
                    <td><input type="radio" id="Buy" name="tradetype" class="tradetype" required value="Buy"/> Buy
                    <input type="radio" id="Sell" name="tradetype" class="tradetype" value="Sell"/> Sell </span></td>
               </tr>
               <tr>  
                    <td><label>Metal:</label></td>
                    <span class="text_11">
                    <td><input type="radio" id="Steel" name="metal" class="metal" required value="Steel"/> Steel
                    <input type="radio" id="Iron" name="metal" class="metal" value="Iron"/> Iron </span></td>
               </tr>
               <tr>  
                    <td class="select"><label>Amount:</label></td>
                    <td><select id="amount" name="amount">
                    <option value="">Select</option>
                    <?php include_once "selectamount.php"?></td>
                    </select>
               </tr>
               <tr>  
                    <td class="select"><label>Date:</label></td>
                    <td><select id="date" name="date" id="date">
                    <option value="">Select</option>
                    <?php include_once "selectdate.php"?></td>
                    </select>
               </tr> 
               <tr> 
                    <td colspan="2" align="center">
                    <button type="button" id="submit_btn">
                       <span class="chngetext">Check</span>
                    </button>
                    </td>
               </tr>
         </table>
      </form>
  </fieldset>

  <fieldset class="tab-pane" id="conf_tab">
    <table>
        <tr style="text-align:center">
            <th colspan="2"><div class="header_3">Pre-Order Ticket Details</div></th>
        </tr>
        <tr style="text-align:left">
            <td><label>Account Number:</label></td>
            <td><mgin><span id="confirm_accountnumber"></span></mgin></td>
        </tr>
        <tr style="text-align:left">
            <td><label>Trade Pre-Order:</label></td>
            <td><mgin><span id="confirm_tradetype"></span></mgin></td>
        </tr>
        <tr>
            <td><label>Amount:</label></td>
            <td><mgin><span id="confirm_amount"></span> 9999 Pooled Allocated <span id="confirm_metal"></span> Loco Singapore</mgin></td>
        </tr>
        <tr>
            <td><label>On date:</label></td>
            <td><mgin><span id="confirm_date"></span></mgin></td>
        </tr>
            <td><label>Pre-Order Discount:</label></td>
            <td><mgin><span id="confirm_data"></span></mgin></td>
        </tr>
        <tr>
            <td><label>Pre-Order Deposit:</label></td>
            <td><mgin>SGD 5000.00</mgin></td>
        </tr>
        <tr>
            <td><label>Additional follow up order:</label></td>
            <td><mgin>New Sell Order to be given 2 days before purchase order date.</mgin></td>
        </tr>
        <tr>
            <td colspan="2" align="center"><button type="submit" class="btn btn-default" id="confirm_btn">Confirm Order</button></td>
        </tr>       
    </table>
  </fieldset>
</div>

Jquery

$(document).ready(function() {
  $('#submit_btn').click(function() {

    // Get the value of the field with 'firstname' id.
    var accountnumber = $('#accountnumber').val();
    var tradetype = $('input.tradetype:checked').val();
    var amount = $('#amount').val();
    var metal = $('input.metal:checked').val();
    var date = $('#date').val();
    var data = "<?php include 'retrievepremordisc.php'; ?>";

    $('#confirm_accountnumber').text(accountnumber);
    $('#confirm_tradetype').text(tradetype);
    $('#confirm_amount').text(amount);
    $('#confirm_metal').text(metal);
    $('#confirm_date').text(date);
    $('#confirm_data').text(data);

    // Hide form tab and show confirmation tab
    $('#form_tab').removeClass('active');
    $('#conf_tab').addClass('active');

  });
});

PHP file (retrievepremordisc.php)

<?php
include_once "connect.php";
$conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password); 

$form=$_GET;
$trade=$form['tradetype'];
$metal=$form['metal'];
$amount=$form['amount'];
$date=$form['date'];

$stmt = $conn->query("SELECT Discount FROM Contracts WHERE Trade='$trade' AND Metal='$metal' AND Amount='$amount' AND ExpiryDate='$date'");
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) { 
   echo $row['Discount']; 
} 
?>

Thank you!

Answer 1

When you click in the submit button, the form performs a submit action, so the jQuery code doesn't execute.

Change

<button type="submit" name="submit" id="checkbut">Check Premium</button>

to

<button type="button" name="submit" id="checkbut">Check Premium</button>.

Other way is by using event.preventDefault();.

$(document).ready(function() {
  $('#checkbut').click(function(e) {
    e.preventDefault(); // This prevents the action of sending the form.

    // Get the value of the field with 'firstname' id.
    var accountnumber = $('#accountnumber').val();
    var tradetype = $('#tradetype').val();
    var amount = $('#amount').val();
    var metal = $('#metal').val();
    var date = $('#date').val();

    $('#confirm_accountnumber').text(accountnumber);
    $('#confirm_tradetype').text(tradetype);
    $('#confirm_amount').text(amount);
    $('#confirm_metal').text(metal);
    $('#confirm_date').text(date);

    // Hide form tab and show confirmation tab
    $('#form_tab').removeClass('active');
    $('#conf_tab').addClass('active');

  });
});

---

However:

Id selectors must be unique in the page. You have two buttons with same id. You need to rename properly with unique identifiers.

By the context of your html:

<div id="Sellbut" class="toHide" style="display:none"><button type="submit" name="submit" id="checkbut">Check Premium</button></div>
<div id="Buybut" class="toHide" style="display:none"><button type="submit" name="submit" id="checkbut">Check Discount</button></div>

These buttons seem perform different actions, so you'll need to rename it.