如何使用while循环通过jquery获取输入字段值

I am using php while loop and want to get value for ajax. my code is

while{
<form class="commentform">
  <input type="hidden" class="proid" name="proid[]" value="<?=$rr['id']?>">  
  <input type="text" class="form-control wac" name="comval[]" placeholder="Write a comment..">
  </form>  
}

<script type="text/javascript">
$(document).ready(function(){
    $('.commentform').on('submit', function(e){
        var comment = $(this).next('.proid').attr('value');
        $('#res').html(comment);
        alert(comment);
        return false;
<script>

please guide to get value in while loop for ajax on form submit. Thanks in advance

You need to use .find()/.children() as input is a child not a sibling. Additionally use .val() to get the current value

var comment = $(this).find('.proid').val();

instead of

var comment = $(this).next('.proid').attr('value');

You could also serialize all the inputs of the current form and run through each one like this :

$('.commentform').on('submit', function(e){
    var formInputs = jQuery(this).serializeArray();
    jQuery.each(formInputs, function(i, field){
        console.log(field.name + " : " + field.value);
    });
});