Send variable from javascript to php and receive it back as a link for file download -

i need send variable javascript php file receive link file download.

variable send list.php:

<a href="javascript:filesave(<?php $val ?>);">pdf</a>  <script language="javascript" type="text/javascript"> function filesave($fid) {  $.post( "getfile.php", { id: $fid }) ...  ... </script> 

link recieved getfile.php:

<?php if (isset ($_post['id'])) { $link = "./pdfs/vers".$_post['id']; } ?> 

i want without page reload or redirect. can i?

if list.php , getfile.php on same server, can use ajax.

in javascript

function filesave($fid) {   $.ajax({     type: 'post',     url: 'list.php',     data: {       'id': $fid     },success: function(data){       // process after received data getfile.php     }   }); 

in php

if (isset($_post['id'])) {   header("content-type: text/plain; charset=utf-8");   $link = "./pdfs/vers".$_post['id'];   echo $link; }