The fundamental problem is that when you use hashbangs, if you want the page "/#!12345" the server gets: GET / HTTP/1.1 And never knows what content the c

The fundamental problem is that when you use hashbangs, if you want the page "/#!12345" the server gets: GET / HTTP/1.1 And never knows what content the client is trying to access, until the client retrieves and processes client-side javascript. Then the client can request further information from the server. The theory is that you can make a "single-page" web-app that loads all of the javascript at once. Then went state needs to be updated, you can do it all from javascript. In practice, it didn't work as well.