How to parse a URL?

Question

If there is one thing I just cant get my head around, it\'s regex.

So after a lot of searching I finally found this one that suits my needs:

function         


        

Answer 1

The RFC (see appendix B) provides a regular expression to parse the URI parts:

^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?
 12            3  4          5       6  7        8 9

where

scheme    = $2
authority = $4
path      = $5
query     = $7
fragment  = $9

---

Example:

function parse_url(url) {
    var pattern = RegExp("^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\\?([^#]*))?(#(.*))?");
    var matches =  url.match(pattern);
    return {
        scheme: matches[2],
        authority: matches[4],
        path: matches[5],
        query: matches[7],
        fragment: matches[9]
    };
}
console.log(parse_url("http://www.somesite.se/blah/sdgsdgsdgs"));

gives

Object
    authority: "www.somesite.se"
    fragment: undefined
    path: "/blah/sdgsdgsdgs"
    query: undefined
    scheme: "http"

DEMO