You can also conditionally load assets, so if you’re using WordPress:
// code to load the asset
this way you request the asset only when it is needed.
You could have apache do this work for you with .htaccess file. See section [File concatenation](https://github.com/h5bp/html5-boilerplate/blob/master/.htaccess) line #509 from HTML5Boilerplate .htaccess file.