Предотвращение отправки формы, если динамическое поле пуст … Php / Jquery / Ajax

Вы можете добавить счетчик в некоторые данные-attr для активов и подтвердить это до AJAX за один снимок.

$('.assets-selected').on('change', function(){ $(this).data( "selecteds", $(this).find('option').length); }); function checkAssets(){ $('.assets-selected').each(function(){ if (typeof $(this).data('selecteds') == undefined || $(this).data('selecteds') < 1) { return false; } else { return true; } }); } if(checkAssets()) { //submit the form to server $.ajax({ url : '../pages/php_action/addnewlead/creatlead.php', type : 'POST', data : form.serialize(), dataType : 'json', success:function(response) { // remove the error $(".form-group").removeClass('has-error').removeClass('has-success'); if(response.success == true) { $(".messages").html('<div class="alert alert-success alert-dismissible" role="alert">'+ '<button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>'+ '<strong> <span class="glyphicon glyphicon-ok-sign"></span> </strong>'+response.messages+ '</div>'); // reset the form $("#newleadform")[0].reset(); // reload page after 7 sec. setInterval(function () { location.reload(null, false); }, 7000); } else { $(".messages").html('<div class="alert alert-warning alert-dismissible" role="alert">'+ '<button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>'+ '<strong> <span class="glyphicon glyphicon-exclamation-sign"></span> </strong>'+response.messages+ '</div>'); } // /else } // success }); // ajax subit } /// if 

Fetch Assets Вопросы и ответы из базы данных (PHP). Поместите класс, который я показал в моем примере.

Послушайте, что вы вызываете все вопросы один раз. Перед проверкой сделайте проверку, чтобы избежать ошибок и других проблем.

 <?php //load_data.php $connect = mysqli_connect("localhost", "root", "", "test"); $output = ''; if(isset($_POST["assetid"])) { if($_POST["assetid"] != '') { $sql = "SELECT * FROM customquestions WHERE assetid = '".$_POST["assetid"]."'"; } else { $sql = "SELECT * FROM customquestions WHERE assetid = 'akash'"; } $result = mysqli_query($connect, $sql); $quesno = 1; while($row = mysqli_fetch_array($result)) { //poor and ugly way to do something to filter, the best solution is the questions have a table 1 to N, where the 1 table is cover, main information and the N the questions, so each index from your array will be filled only with the questions that db has stored else will bring nothing and you can validate better the frontend, besides provides more scalability. if ($row['colqa1'] == '' && $row['colqa2'] == '' && $row['colqa3'] == '' && $row['colqa4'] == '' && $row['colqa5'] == '' && $row['colqa5'] == '' && $row['colqa6'] == '' && $row['colqa7'] == '' && $row['colqa8'] == '' && $row['colqa9'] == '' && $row['colqa10'] == ''){ continue; //don't show dropdown if you don't have questions! } $output .= '<div class="col-sm-6">'; $output .= '<div class="form-group">'; $output .= '<label for="campaignname">'.$row["cqname"].'</label>'; $output .= '<select name="cq'.$quesno.'" size="5" class="form-control assets-selected" required>'; // $output .= '<div style="border:1px solid #ccc; padding:20px; margin-bottom:20px;">'.$row["product_name"].'</div>'; // $output .= '<tr><td>'.$row["cqname"].'<br></td>'; $output .= '<option value="" required>Select Custom Question Answer</option> <option value="'.$row["cqa1"].'">'.$row["cqa1"].'</option> <option value="'.$row["cqa2"].'">'.$row["cqa2"].'</option> <option value="'.$row["cqa3"].'">'.$row["cqa3"].'</option> <option value="'.$row["cqa4"].'">'.$row["cqa4"].'</option> <option value="'.$row["cqa5"].'">'.$row["cqa5"].'</option> <option value="'.$row["cqa6"].'">'.$row["cqa6"].'</option> <option value="'.$row["cqa7"].'">'.$row["cqa7"].'</option> <option value="'.$row["cqa8"].'">'.$row["cqa8"].'</option> <option value="'.$row["cqa9"].'">'.$row["cqa9"].'</option> <option value="'.$row["cqa10"].'">'.$row["cqa10"].'</option> </select>'; // $output .= '<tr><td colspan="10"><hr></td></tr>'; $output .= '</div></div></div>'; $quesno++; } echo $output; } ?>