Correctly. Nowadays most of the web application frameworks have a built-in concept of an "asset pipeline". You drop your javascripts and stylesheets in a specif

Correctly. Nowadays most of the web application frameworks have a built-in concept of an "asset pipeline". You drop your javascripts and stylesheets in a specific folder, and when starting your application in a production environment, everything is concatenated, minified and optimized, so you have basically exactly one javascript file and one stylesheet file to download for your users.