Hi guys,
I've just learned that you can make just one request to the server for the whole website like a trick below:

#Head
#CSSfile


#Navigation_main
#MainContainer
#Footer
#JSfile
Code (markup):

In this case, I send just one request for a simple html file to the server.
At the server, I replace a hastag like #Footer with block of code like something below:

Footer Stuffs
Code (markup):

Now, I was wondering...

Should I make one request for the whole web site or separated requests, which is better