Delete the file without reloading the page

[irl]

Help me find a mistake. It doesn't work.

Js:

 function delete() {
      var msg   = $('#closed').serialize();
        $.ajax({
          type: 'POST',
          url: 'submit.php?delete=<? $filename ?>',
          data: msg,
          success: function(data) {
            alert("Файл удален");
          },
          error:  function(xhr, str){
                alert('Возникла ошибка: ' + xhr.responseCode);
            }
        });

Php:

$dir  = 'downloads';
$files = scan_dir($dir);
if($files == false) printf("Каталог пуст");
else { printf("<table  class='bordered'>
<thead>
    <tr>       
        <th>Название файла</th>
        <th>Размер</th>
        <th>Удалить</th>
    </tr>
 </thead>"); }
foreach($files AS $i => $filename) {

printf(

'<tr><td><a download href="/downloads/%s" style="color:black">%s</a> </td><td style="white-space:nowrap;">%s</td><td><form  action="javascript:void(null);" id="closed" method="post"><button  onclick="delete()">del</a></form></td></tr>',

urlencode( $filename),

$filename,

human_filesize(filesize( $dir . '/' . $filename)), urlencode(  $filename), $filename

);

}

submit.php:

if (isset($_GET['delete']))

{

unlink("./downloads/".$_GET['delete']);

}

Ideally, a file that the user has invoked should be removed without reloading the table itself.

[baileigh]

Change. $_GET ♪ $_POST

if (isset($_GET['delete']))
{
unlink("./downloads/".$_POST['delete']);
}

And also send the file name as a parameter. delete()

printf(
    '<tr><td><a download href="/downloads/%s" style="color:black">%s</a> </td><td style="white-space:nowrap;">%s</td><td><form  action="javascript:void(null);" id="closed" method="post"><button  onclick="delete(%s)">del</a></form></td></tr>',
    urlencode( $filename),
    $filename,
    human_filesize(filesize( $dir . '/' . $filename)), urlencode(  $filename), $filename
);

And JS's function is slightly changed:

function delete(filename) {
  var msg   = $('#closed').serialize();
    $.ajax({
      type: 'POST',
      url: 'submit.php?delete=' + filename,