Show success message on AJAX success - php

Question

I have ajax based form submission and on success I want to show a success message. The elements are being generated dynamically by mysql results. Currently the success message for one shows up for all the elements in loop. How can I obtain this for that particular element. Some insight will be very helpful.
<?php if($row['section'] == 1) {?>
<ul class="list-group">
<li class="list-group-item active">
<div class="radio noMargin" id="<?php echo $sectionOne ; ?>info"><?php echo $no ; ?> <span class="glyphicon glyphicon-arrow-right"></span></div><?php echo "<font color='pink'>Ques ID :[".$row['id']."]</font>";?><div class="question"><?php echo $row['question'] ; ?></div>
<div style="float:right; margin-top:-20px;">
Marks:<?php echo $row['marks'] ; ?></div></li>
<?php
echo '<input type="hidden" name="question[]" id="questionId" value="'.$row['id'].'">';
echo '<input type="hidden" name="attempt" value="'.$attemptCount.'">';
echo '<input type="hidden" name="unit_id" value="'.$unit_id.'">';
echo '<input type="hidden" name="chapter_id" value="'.$chapter_id.'">';
$questionId = $row['id'] ;
$sqO =$db->query("SELECT id, options from tbl_options_mock_question WHERE question_id = ".$questionId."");
while($rowO=mysql_fetch_array($sqO))
{
?>
<li class="list-group-item wrp_radio">
<div class="radio noMargin">
<label>
<input disabled type="radio" class="checkedInfo" alt="<?php echo $no ; ?>" name="optionAns<?php echo $i ; ?>" value="<?php echo $rowO['id'] ; ?>">
<?php echo $rowO['options'] ; ?></label>
</div>
</li>
<?php } ?>
<div class="successMessage" style="display:none;"><font color="green"><b>Your notes for question is submitted successfully.</b></font></div>
<br>
<a class="click_notes" data-question-id="<?=$questionId?>"> <font size='2' color='blue'> Add Notes</font></a>
<br>
<div class="demo"></div>
</ul>
<?php $i++;$no++; ?>
<?php } ?>
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('.click_notes').on('click', function() {
var tid = $(this).data('question-id');
$(this).closest('ul').find('.demo').html('<div class="comment_form"><span><b>X</b></span><form id="contactForm1" action="submit.php" method="post"><textarea required cols="50" class="span10" name="notes" rows="6"></textarea><br><input class="btn btn-primary" id="submitnotes" name="submit_notes" type="submit" value="Add Notes"><input type="hidden" name="submitValue" value="' + tid + '" /></form><br></div>');
});
$(document).on('submit', '#contactForm1', function(e) {
e.preventDefault();
$.ajax({
type: this.method,
url: this.action,
data: $(this).serialize(),
success: function(data) {
$('.comment_form').hide();
$(".successMessage").show();
},
error: function(xhr) {
console.log('An error occurred.');
console.log(xhr);
},
});
}).on('click', 'span', function() {
$(this).parent().hide()
});
});
</script>

Answer 1

Here is a Fiddle I used for testing: https://jsfiddle.net/Twisty/gokfth37/41/
HTML
<ul class="list-group">
<li class="list-group-item active">
<div class="radio noMargin" id="section-1-info">
1
<span class="glyphicon glyphicon-arrow-right"></span>
</div>
<font color='pink'>Ques ID : 1</font>
<div class="question">
Question 1
</div>
<div style="float:right; margin-top:-20px;">Marks: Marks 1
</div>
</li>
<li>
<input type="hidden" name="question[]" id="questionId" value="1">
<input type="hidden" name="attempt" value="0">
<input type="hidden" name="unit_id" value="1">
<input type="hidden" name="chapter_id" value="1">
</li>
<li class="list-group-item wrp_radio">
<div class="radio noMargin">
<input disabled type="radio" class="checkedInfo" alt="1" name="optionAns1" value="1">
<label>Answer 1</label>
<input disabled type="radio" class="checkedInfo" alt="2" name="optionAns2" value="2">
<label>Answer 2</label>
<input disabled type="radio" class="checkedInfo" alt="3" name="optionAns3" value="3">
<label>Answer 3</label>
</div>
</li>
<li>
<div class="successMessage" style="display:none;">
<font color="green">
<b>Your notes for question is submitted successfully.</b>
</font>
</div>
<br>
<a class="click_notes" data-question-id="1">
<font size='2' color='blue'>
Add Notes
</font>
</a>
<br>
<div class="demo">
</div>
</li>
</ul>
I made some leaps and created HTML based on the PHP code you had. You can see here that I had to correct a lot of HTML Syntax. You should not have <ul> that have <input> or <div> elements as children. It should only be <li> elements that can then contain other elements.
So when the "Add Notes" button is clicked, a form is dynamically created that must have a unique ID and all the elements within must have unique IDs. This form will have a Close button, a Text Area, a hidden element and a submit button. When the form is submitted, the data from the form should be submitted via POST to a specific URL and upon successful submission, display the success note.
JavaScript
$(function() {
$('.click_notes').on('click', function() {
$(this).parent().find(".successMessage").hide();
$(this).hide();
var that = $(this);
var tid = $(this).data('question-id');
var form = $("<form>", {
id: "contact-form-" + tid,
action: "submit.php",
method: "POST",
class: "comment-form"
}).submit(function(e) {
e.preventDefault();
$.ajax({
type: $(this).attr("method"),
url: $(this).attr("action"),
data: $(this).serialize(),
success: function(data) {
console.log("Success");
$('.comment-form').hide();
that.parent().find(".successMessage").show();
that.show();
},
error: function(xhr) {
console.log('An error occurred.');
console.log(xhr);
}
});
});
$("<span>", {
class: "close btn"
}).html("X").click(function() {
that.show();
$(this).parent().hide();
}).appendTo(form);
$("<textarea>", {
required: true,
cols: "50",
class: "span10",
name: "notes"
}).appendTo(form);
$("<input>", {
type: "hidden",
name: "submitValue",
value: tid
}).appendTo(form);
$("<button>", {
class: "btn btn-primary",
id: "submit-notes-" + tid,
type: "submit"
}).html("Add Notes").appendTo(form);
$(this).closest('li').find('.demo').html(form);
});
});
One of the benefits of creating content with jQuery is that you can bind callbacks when you create the object. So instead of mucking around with .on() you can also just call .click() or .submit() right when you're creating the objects. Either works, but sometimes one is easier to manage than the other.
In the example above, we create the form, bind a submit callback to it, add other elements, and the replace #demo with this newly created content. I also added some extra bits to hide a few things, if they are being shown.
When you see var that = $(this); it's sort of a little trick since we do not want to confuse this in some of the other callbacks, yet we may need to reference the original this, and we can, using that.
Hope this helps.

Answer 2

I suggested moving the message outside the loop so you only have ONE message. You could even show it in a dialog
Also you have more than one jQuery loaded. Just load latest or 3.x, not both
change id="contactForm" to class="contactForm"
The HTML is invalid. Move the </ul> to before the demo div
It would have been easier if you wrapped each question and demo div in a wrapper, but try this:
$(document).on('submit', '.contactForm', function(e) {
e.preventDefault();
var $currentForm = $(this);
...
success: function(data) {
$currentForm.hide();
$currentForm.prevAll(".successMessage:first").show();
},