如何使用php html和sql中的select获取文本框中的数据价格？ 到目前为止，我已经尝试过了。我想做的是，当我更改选择框时，旁边的输入框应根据data-price的值进行更改。
尝试了一周。
例如 选择借方 地方国库券100
<script>
$(document).ready(function(){
var i=1;
var chart_add = '<tr id="row_chart'+i+'"><td><select name="chart_of_account[]" class="selectpicker" data-live-search="true"><option style="width: 400px;">--Select Chart of Account--</option><?php $chart=mysqli_query($conn,"Select acoount_no,account_title from chart_of_account"); while($row=mysqli_fetch_assoc($chart)){$account_no = $row["acoount_no"]; $account_title = $row["account_title"];?><option value="<?php echo $account_no; ?>" style="width: 400px;"><?php echo $account_no ." | ". $account_title; ?></option><?php }?></select></td><td><input type="text" name="chart_debit[]" class="form-control chart_debit" id="chart_debit"onchange="chart_change_debit()"></td><td><input type="text" name="chart_credit[]" class="form-control chart_credit" id="chart_credit" onchange="chart_change_credit()"></td><td><button type="button" name="remove_chart" id="'+i+'" class="btn btn-danger remove_chart">X</button></td></tr>';
$('#add').click(function(){
i++;
$('#dynamic_field').append(chart_add);
$('.selectpicker').selectpicker('render');
$('.chart_debit').val($('select[name="chart_of_account"] option:selected').data('price'));
});
$(document).on('click', '.remove_chart', function(){
var button_id = $(this).attr("id");
$('#row_chart'+button_id+'').remove();
});
});
</script><form method = "POST" name="add_name" id="add_name">
<div class="row">
<div class="col-md-12">
<!-- chart of account -->
<div class="row">
<div class="col-md-12">
<div class="box box-default">
<div class="box-header with-border">
<h3 class="box-title">Chart of Account</h3>
</div>
<div class="box-body">
<table class="table table-bordered" id="dynamic_field">
<tr>
<th rowspan="2">Chart of Account</th>
<th>Debit</th>
<th>Credit</th>
<th rowspan="2"><button type="button" name="add" id="add" class="btn btn-success">Add More</button></th>
</tr>
<tr>
<th>
<input type="text" name="chart_debit_sum" class="form-control chart_debit_sum" id="chart_debit_sum" readonly>
</th>
<th>
<input type="text" name="chart_credit_sum" class="form-control chart_credit_sum" id="chart_credit_sum" readonly>
</th>
</tr>
<tr>
<td>
<select name="chart_of_account[]" class="selectpicker" data-live-search="true">
<option style="width: 400px;">--Select Chart of Account--</option>
<?php
$chart = mysqli_query($conn,"Select acoount_no,account_title from chart_of_account");
while($row = mysqli_fetch_assoc($chart)){
$account_no = $row['acoount_no'];
$account_title = $row['account_title'];
$amount = $row['test_amount'];
?>
<option value = "<?php echo $account_no; ?>" style="width: 400px;" data-price = "<?php echo $amount; ?>">
<?php echo $account_no . " | " .$account_title; ?>
</option>
<?php } ?>
</select>
</td>
<td>
<input type="text" name="chart_debit[]" class="form-control chart_debit" id="chart_debit" onchange="chart_change_debit()">
</td>
<td>
<input type="text" name="chart_credit[]" class="form-control chart_credit" id="chart_credit" onchange="chart_change_credit()">
</td>
<td></td>
</tr>
</table>
</div>
</div>
</div>
</div>
<!-- chart of account -->
</div>
<!-- chart and sub-->
</div>
</form>
