Regex For Selecting Specific URLs?

JS isn't my usual language, but I'm venturing out to write a Chrome extension. This extension basically just injects a script on a page, so it behaves just like any other JS.Anyway, the script finds specific URLs on a specific page, and changes them slightly. I'm using regex to find these URLs. I've got one working, but I need another, and I can't figure it out.The first is this:Also, my skills with regex are miserable, so if you know of any way to make this better, I'm all ears. This matches URLs like this:Now I'm trying to match URLs like this:[URL]If you know how to modify the original regex so that it'll match the second kind of URL (but not the first)