This answer is right. The original question isn't asking anything about parsing, they are trying to search for specific tags, which is a great use for a regex.

This answer is right. The original question isn't asking anything about parsing, they are trying to search for specific tags, which is a great use for a regex. Yes, it will probably return some invalid matches unless you go out of your way to filter out comments and script tags, but odds are you don't need that. Applying regex's only really count as "parsing" when you are matching against an entire document. Searching is not parsing. Same argument applies if you apply grep to an html doc - I wonder why there's no posts about "you can't parse HTML with grep". I apply grep all the time to source code...