Dear SitePoint,

I'm currently using this method to refer to my JavaScript files:

Code:
<script type="text/javascript" src="filename.js"></script>
While doing work for some clients I have made changes to the the JavaScript file referenced above. Because their browser has cached it, they end up getting errors on the page unless they hard refresh and get the new version of the file.

Is there anyway to make the JavaScript file come down fresh if it has been modified since the last download?

Thanks!