Export HTML table to Excel using php - php

Question

I am trying to export html table to excel sheet.But it is not working. I have a table where i've called DB table values. I want to export that values to a excel sheet on a button click. But after clicking on the button, Nothing is happening.
I have followed one tutorial for this. Can you please tell me, if i am missing something?
Code:
Php code:
<button name="create_excel" id="create_excel" class='btn c-theme-btn c-btn-uppercase btn-xs c-btn-square c-font-sm'>Export to Excel</button>
</div>
<div class="c-content-panel">
<div class="c-body">
<div class="row">
<div class="col-md-12" id="employee_table">
<table class="table table-bordered">
<?php
echo " <thead>
<tr>
<th>Order ID</th>
<th>Date</th>
<th>Name</th>
<th>Store Name</th>
<th>Zip</th>
<th>City</th>
<th>Address</th>
<th>Contact</th>
<th>Tv Varient</th>
<th>Total</th>
<th>Delivery</th>
<th>Action</th>
</tr>
</thead>
<tbody>";
while($row = mysqli_fetch_array($result))
{
$id = $row['id'];
echo"<tr id='row_$id'>";
echo "<td>" . $row['id'] . "</td>";
echo "<td>" . $row['rdate'] . "</td>";
echo "<td>" . $row['rname'] . "</td>";
echo "<td>" . $row['rstore'] . "</td>";
echo "<td>" . $row['rzip'] . "</td>";
echo "<td>" . $row['rcity'] . "</td>";
echo "<td>" . $row['raddress'] . "</td>";
echo "<td>" . $row['rphone'] . "</td>";
echo "<td>" . $row['rtv_varient'] . "</td>";
echo"<td>" . $row['ramount'] . "</td>";
echo"<td>" . $row['rdelivery'] . "</td>";
echo "<input type='hidden' id='row_id' value='$id'/>";
echo "<td> <button id='test' class='btn c-theme-btn c-btn-uppercase btn-xs c-btn-square c-font-sm'>Delete</button> </td>";
echo"</tr>";
}
?>
</tbody>
excel.php:
<?php
//excel.php
header('Content-Type: application/vnd.ms-excel');
header('Content-disposition: attachment; filename='.rand().'.xls');
echo $_POST["data"];
?>
Script Code:
<script>
$(document).ready(function(){
$('#create_excel').click(function(){
var excel_data = $('#employee_table').html();
var page = "excel.php?data=" + excel_data;
window.location = page;
});
});
</script>
I have followed this tutorial: http://www.webslesson.info/2016/08/export-html-table-to-excel-file-using-jquery-with-php.html