validation utility?

Giganews Newsgroups
Subject: validation utility?
Posted by:  carlos (carlos4ubun…
Date: Wed, 14 Nov 2007

If someone were to write a utility that would go through your html,
and javascript code and validate it/modify it, what language/
technology would you experts suggest I use? I know that the W3C
already does this, but I wanted to write something simple on my own
just for learning purposed. Anyway, I was thinking about using C# or
javascript, that would accept the files, and then call some external
objects/classes to handle the parsing and manipulation of the files. I
guess what I was wondering is if there is a better alternative or an
open source project I could modify to handle this?