I am required to pass a parametre to jquery post and then get it using $_POST method .But it doesnt work this way.I cant display on the page
<!doctype html>
<html lang="en">
<head>
<title>Document</title>
<script
src="https://code.jquery.com/jquery-3.3.1.js"
integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60="
crossorigin="anonymous"></script>
<script
src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"
integrity="sha256-T0Vest3yCU7pafRw9r+settMBX6JkKN06dqBnpQ8d30=" crossorigin="anonymous"></script></head>
<body>
<?php
@$a = isset($_POST["isim"]) ? "var" : "yok";
echo $a;
?>
<button type="button" id="tikla">Tıkla</button>
</body>
</html>
<script>
$(document).ready(function(){
$('#tikla').click(function () {
$.post( "xx.php", {"isim": "tayfun"})
.done(function(data){
});
})
})</script>