How can I view the controller, which is a server-level language?

I can't see it.

What I do on the server is create html and JavaScript according to the user and drop it off. For example, the time you posted this question appears as 8 minutes ago. The server reads the time and changes the information to an HTml called 8 minutes ago and delivers it to the web browser, so you don't know how you calculated 8 minutes ago.

For your information, the expression controller, which is a server-level language, is not a correct expression, but can I see the internal code of how the server implementing the web page is implemented?I think is correct.