Regex lookahead with multiple negative conditions

Question

I am performing a regex on a HTML string to fetch URL's. I want to fetch all href's and src's that are not javascript. From another SO post I have the following pattern:

/(href|src)?\="http:\/\/www\.mydomain\.com\/(?:(?!\.js).)*"/

Which fetches me results like:

src="http://www.mydomain.com/path/to/resource/image.gif" alt="" border="0"

This is good because it is missing the .js results. It's bad because it's fetching additional tags in the element. I tried the following amendment to stop at the first ":

/(href|src)?\="http:\/\/www\.mydomain\.com\/(?:(?!\.js).)[^"]*"/

It works in that it returns href="$url", but it returns results ending in .js. Is there a way to combine a negative lookahead that says:

• Match string until it comes across another " - i.e. [^"]*; and
• Do not match string if it ends in .js"

Thanks in advance for any help/tips/pointers.

Answer 1

add a "?" to the "*" before the last quote. This will make the "*" non-greedy, ie: it will stop matching at the first quote, not the last

/(href|src)?\="http:\/\/www\.mydomain\.com\/(?:(?!\.js).)*?"/