is it possible to set custom headers on js <script> requests?

Question

Is something like this possible?

<script src="http://myserver.com/some.js" my-custom-header="foo"></script>

Update (a bit more detail):

I've been asked if there was a way to communicate some parameters to the server as part of the script request using headers instead of GET params. I said, "no," but thought I'd double check.

Answer 1

Short answer: no. By default a script tag will just retrieve the resource specified in the src attribute.

However, if you use an AJAX request to retrieve the script (and add it later/execute it), you can use the setRequestHeader function of the XMLHttpRequest object (see http://www.developertutorials.com/learn-ajax/custom-http-headers-2643.php).

You could also use more complex methods, such as using mod_rewrite to rewrite paths, and include the parameters in the url. The best solution depends on what you want to do, and how much control you have over the server.