Autorespond with script

Hi there,

can you help me? I want to search and replace ainside a html-file.

It means there is a request like "index.html" and than I want to replace a part of this with a local snippet and at the end it should be delivered to the brower as "the respond"

At the Moment I write a Funktion and call it

*script:TestFunc

It is called because I see a log, but I do'n't know what's next :-/

Thanks!

Cya

Dominic