title: New to JS - how to format professional js files?
body: <p>Completely new to Stack Exchange. Trying to learn programming, so checking out various websites and their JavaScript files. When I look at them, the look like a complete mess. E.g. If I go to Airbnb.com and view source, then look at the JS file (toward the bottom), then open it, it's a real mess. Others I look at around the web are similar. Is there a way to format this code to make it neater? (hopefully automatically e.g. if I copy/paste it somewhere?)</p>
  
  <p>Here's an <a href="https://a2.muscache.com/airbnb/static/packages/homepage-2930e36250124361f33d24ae716ced1e.js" rel="nofollow">example</a></p>