1var currentUrl = window.location.href;

1window.location.pathname

1var newURL = window.location.protocol + "//" + window.location.host + "/" + window.location.pathname + window.location.search

1function parseUrl(url) {
2    var m = url.match(/^(([^:\/?#]+:)?(?:\/\/((?:([^\/?#:]*):([^\/?#:]*)@)?([^\/?#:]*)(?::([^\/?#:]*))?)))?([^?#]*)(\?[^#]*)?(#.*)?$/),
3        r = {
4            hash: m[10] || "",                   // #asd
5            host: m[3] || "",                    // localhost:257
6            hostname: m[6] || "",                // localhost
7            href: m[0] || "",                    // http://username:password@localhost:257/deploy/?asd=asd#asd
8            origin: m[1] || "",                  // http://username:password@localhost:257
9            pathname: m[8] || (m[1] ? "/" : ""), // /deploy/
10            port: m[7] || "",                    // 257
11            protocol: m[2] || "",                // http:
12            search: m[9] || "",                  // ?asd=asd
13            username: m[4] || "",                // username
14            password: m[5] || ""                 // password
15        };
16    if (r.protocol.length == 2) {
17        r.protocol = "file:///" + r.protocol.toUpperCase();
18        r.origin = r.protocol + "//" + r.host;
19    }
20    r.href = r.origin + r.pathname + r.search + r.hash;
21    return r;
22};
23parseUrl("http://username:password@localhost:257/deploy/?asd=asd#asd");

1var reg = /.+?\:\/\/.+?(\/.+?)(?:#|\?|$)/;
2var pathname = reg.exec( 'http://www.somedomain.com/account/search?filter=a#top' )[1];
3