Javascript URL parser

javascript url parser

// function
function parseUrl(e) {
    var n = {
        strictMode: false,
        key: ["source", "protocol", "authority", "userInfo", "user", "password", "host", "port", "relative", "path", "directory", "file", "query", "anchor"],
        q: {
            name: "queryKey",
            parser: /(?:^|&)([^&=]*)=?([^&]*)/g
        },
        parser: {
            strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
            loose: /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/\/?)?((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/
        }
    };
    var r = n.parser[n.strictMode ? "strict" : "loose"].exec(e),
        i = {}, s = 14;
    while (s--) i[n.key[s]] = r[s] || "";
    i[n.q.name] = {};
    i[n.key[12]].replace(n.q.parser, function (e, t, r) {
        if (t) i[n.q.name][t] = r
    });
    return i;
}

// usage example
var url = document.location.href;
var parser = parseUrl(url);
alert ('Source: ' +parser.source+'\n '
      +'host: '+ parser.host + '\n'
       +'relative: '+ parser.relative+'\n'
      +'path: '+ parser.path + '\n'
      +'authority: '+ parser.authority + '\n'
      +'directory: '+ parser.directory + '\n'
      +'query: '+ parser.query + '\n');