+3  A: 

As long as the extension uses HTTP to communicate, you can use whatever server-side technology you like to generate the data passed back to the client.

Ignacio Vazquez-Abrams  2010-10-17 17:11:39
Wow that is simple. So I guess no JS is needed at all then?
J3M 7OR3  2010-10-17 22:10:57
Not beyond what your extension will be using to actually run.
Ignacio Vazquez-Abrams  2010-10-17 22:12:55
So technically I could just make the extension only in HTML and CSS then, right?
J3M 7OR3  2010-10-17 23:23:38
If the only point of the HTML is to hold links that load other HTML documents, sure.
Ignacio Vazquez-Abrams  2010-10-18 01:54:25

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