<form method="post">
        <div id="vote">
                <input type="radio" name="vote" value="1" default checked>
                <input type="radio" name="vote" value="2">
                <input type="radio" name="vote" value="3">
            <button type="submit" name="submit" onclick="proccess_vote()">Vote!</button>
        </div>

        </form>
<script>
    function proccess_vote(){
        $.post('vote.php', function(result) {
        alert(result);
        });

        alert("done!");
    }
</script>

<?php
$servername = "localhost";
$username="root";
$password="";
$dbname="Fashion";
$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("Connection failed: " .$conn->connect_error);
}

$vote="";

if ( isset($_POST['vote'])) {
    $vote = $_POST['vote']
}

echo("alert('$vote')");

$sql = "UPDATE Votes SET Votes=(votes+1) WHERE ID='".$vote."'";
if ($conn->query($sql) === TRUE) {

}
else {
    die("Error updating record: " .$conn->error);
}

mysqli_close($conn);

?>