Question

I have a string that looks like this: "http://www.example.com/hello/world/ab/c/d.html" (or this: "http://www.example.com/hello/world/ab/d.html")

I want to extract the content between http://www.example.com/hello/world/ and d.html. What should the generic regular expression be?

Answer 1

You probably want

/^http:\/\/[^\/]*\/[^\/]*\/[^\/]*\/(.*)\/[^\/]*$/

This (complicated-looking) expression skips the domain and the first two path components, then extracts all the bits before the final path component.

Example:

>>> 'http://www.google.com/hello/world/ab/c/d.html'.match(/^http:\/\/[^\/]*\/[^\/]*\/[^\/]*\/(.*)\/[^\/]*$/)
["http://www.google.com/hello/world/ab/c/d.html", "ab/c"]