How to make an asynchronous request to collect statistics (JS-PHP)?

Question

PHP

Hello.
It is necessary to collect statistics on some parameters of visits. The bottom line is to make an asynchronous script call every time the page is loaded. Did it like this:

<script async="true" src="/stat.php?var=<?=$var?>"></script>

I transfer the necessary information to /stat.php and write it to the database. This works, but there are doubts about the correctness of such a call. And the browser swears at the wrong MIME type. How to do it right?

Answer 1

in stat.php add
header("Content-Type: application/x-javascript");

Answer 2

Why not make a normal AJAX request to your page loading script?