Myujth

I'm using ajax insert and fetch the data from the database, insert is working perfectly but fetching part is not working give a feedback to fix this issues.

<script>
 $(document).ready(function()
 $("#button").click(function(e)
 e.preventDefault();
 var postId=$("#postId").val();
 var userId=$("#userId").val();
 var postComm=$("#postComments").val();

 $.ajax(
 url:'../validate/inserPostComm.php',
 method:'POST',
 data:
 poId:postId,
 usId:userId,
 poco:postComm
 ,
 success:function(data)
 //alert(data);
 displayFromDatabase();
 $("#postComments").val('');
 
 );
 );
 );

 function displayFromDatabase()
 var postId=$("#postId").val();
 alert(postId);
 $.ajax(
 url: "../validate/getComments.php",
 type: "POST",
 async: false,
 data: 
 poId:postId,
 ,
 success: function(data)
 ('#display_area').html(data); 
 
 );
 
 </script>

and this my html code to retrieve the fetching details from database.

<li>
 <div id="display_area">

 </div>
</li> 
<button type="button" id="button"><i class="fa fa-paper-plane"></i></button>

and also i attached my php code through the ajax i'm passing the id and i'm get the details according to the id.

$postId=$_POST["poId"];

$getPostCom=$postComments->getPostComm($postId,"../");

while($PostComments=mysqli_fetch_assoc($getPostCom))
 

 ?>


 <div class="comet-avatar">
 <img src="<?php echo $PostComments["u_image"]; ?>" alt="">
 </div>
 <div class="we-comment">
 <div class="coment-head">
 <h5><a href="user-profile.php?user_id=<?php echo $PostComments["u_id"]; ?>" title=""><?php echo $PostComments["u_fname"]; ?> <?php echo $PostComments["u_lname"]; ?></a></h5>
 </div>
 <p><?php echo $PostComments["p_comments"]; ?></p>
 </div>

<?php
 
 exit();
?>

Yes this code working perfectly but i missed the $ in the success block.

<script>
 $(document).ready(function()
 $("#button").click(function(e)
 e.preventDefault();
 var postId=$("#postId").val();
 var userId=$("#userId").val();
 var postComm=$("#postComments").val();

 $.ajax(
 url:'../validate/inserPostComm.php',
 method:'POST',
 data:
 poId:postId,
 usId:userId,
 poco:postComm
 ,
 success:function(data)
 //alert(data);
 displayFromDatabase();
 $("#postComments").val('');
 
 );
 );
 );

 function displayFromDatabase()
 var postId=$("#postId").val();
 alert(postId);
 $.ajax(
 url: "../validate/getComments.php",
 type: "POST",
 async: false,
 data: 
 poId:postId,
 ,
 success: function(data)
 $('#display_area').html(data); 
 
 );
 
 </script>