title: How can I get the progress of a downloading <script>?
body: <p>Let's say, for example, I'm creating a game. I have a small script whose job is to load all the assets and present a progress bar to the user while the assets load.</p>
  
  <p>One such asset is a rather large script which contains the game logic. Perhaps upwards of 3 MB.</p>
  
  <p>How can I show the loading progress of the second script to the user?</p>