how can I put ajax in pagination(plain JavaScript not in jQuery)? - javascript

I am new in JavaScript i don't know how to do ajax in pagination. is there anyone who can help me out on ajax in pagination. I write normal code of PHP and Ajax .
Thank you for your good support(:
i know that in ajax pagination is work on ClassName is active or not and replace the Inner HTML at the end but I don't know how can i do in my Code
this is my pagination.php file
<script type="text/javascript" src='../project/assets/js/ajax_pegination.js'></script>
<?php
include('../project/header.php');
include('../project/sidebar.php');
?>
<div class="body-contant">
<div class="main">
<table align="center">
<h2>Persnol information</h2>
<tr>
<div class="column">
<th>Id</th>
<th>firstName</th>
<th>lastName</th>
<th>email</th>
<th>mobileNo</th>
<th>gender</th>
<th>hobbies</th>
<th>Prewview</th>
<th>function</th>
</div>
</tr>
<?php
if (check_is_admin($_SESSION['id'])) {
$select = "SELECT * FROM form";
}
else{
$select = "SELECT * FROM form WHERE ID=".$_SESSION['id'];
}
$result= mysqli_query($conn, $select);
$total_rows= mysqli_num_rows($result);
$limit= 3;
$totalPages= ceil ($total_rows/$limit);
if (!isset ($_GET['page']) ) {
$pageNumber= 1;
} else {
$pageNumber= $_GET['page'];
}
$offset= ($pageNumber-1) * $limit;
if (check_is_admin($_SESSION['id'])) {
$select= "SELECT *FROM form LIMIT " . $offset . ',' . $limit;
}
$result= mysqli_query($conn, $select);
while($data = mysqli_fetch_assoc($result)) {
$extract=explode(',',$data['hobbies']);
$hobbies=[];
?>
<tr>
<td><?php echo $data['ID']; ?> </td>
<td><?php echo $data['first_name']; ?> </td>
<td><?php echo $data['last_name']; ?> </td>
<td><?php echo $data['email']; ?> </td>
<td><?php echo $data['mobile_no']; ?> </td>
<td><?php echo $data['gender']; ?> </td>
<?php
foreach($extract as $hobbiesId){
$select1 = "SELECT * from hobbies WHERE `ID` IN ($hobbiesId)";
$result1=mysqli_query($conn,$select1);
while($data1=mysqli_fetch_assoc($result1)){
$hobbies[] = $data1['name'];
}
}
?>
<td><?php echo implode(",", $hobbies); ?> </td>
<td><img src="..\project\assets\uploads\<?php echo $data['file_path'] ?>" id="preview" alt="img"></td>
<div class="btn">
<td>
<a class="button1" type="button" name="edit" href="..\project\edit_user.php?id=<?php echo $data['ID']; ?>">Edit</a>
<a class="button2" type="button" name="delete" href="../project/delete_user.php?id=<?php echo $data['ID']; ?>" onclick="return confirm('are you sure you want to delete??');">Delete</a>
</td>
</div>
</tr>
<?php
}
?>
</table>
<!-- --------------------------------------------------------- -->
<div class="pagination">
<?php
if (check_is_admin($_SESSION['id'])) {
$pageURL = "";
if($pageNumber>=2){
echo "<a class='prev' href='pagination.php?page=".($pageNumber-1)."' onchange='load()'> Prev </a>";
}
for ($i=1; $i<=$totalPages; $i++) {
if ($i == $pageNumber) {
$pageURL .= "<a class = 'active' href='pagination.php?page=" .$i."'>".$i." </a>";
}
else {
$pageURL .= "<a href='pagination.php?page=".$i."'>".$i." </a>";
}
};
echo $pageURL;
if($pageNumber<$totalPages){
echo "<a class='next' href='pagination.php?page=".($pageNumber+1)."'> Next </a>";
}
}
?>
</div>
<!-- ------------------------------------------------------- -->
</div>
</div>
<?php
include('../project/footer.php');
?>
and this my AJAX_pagination.js file
// document.getElementsByClassName("prev").addEventListener("change", (event) => {
// event.preventDefault();
// load();
// });
function load(){
var httpx = new XMLHttpRequest();
httpx.onreadystatechange = function(){
if(this.readyState==4 && this.status==200){
console.log(this);
document.getElementsByClassName("prev").innerHTML=this.responseText;
}
}
httpx.open("POST", "http://localhost/project/pagination.php", true);
httpx.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
httpx.send();
}

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