makeUri.js - create a URI from an object specification

makeUri.js

// makeURI 1.2.2 - create a URI from an object specification; compatible with
//                 parseURI (http://blog.stevenlevithan.com/archives/parseuri)
// (c) Niall Smart <niallsmart.com>
// MIT License
function makeUri(u) {

    var uri = "";

    if (u.protocol) {
        uri += u.protocol + "://";
    }

    if (u.user) {
        uri += u.user
    }

    if (u.password) {
        uri += ":" + u.password
    }

    if (u.user || u.password) {
        uri += "@"
    }

    if (u.host) {
        uri += u.host
    }

    if (u.port) {
        uri += ":" + u.port
    }

    if (u.path) {
        uri += u.path
    }

    var qk = u.queryKey;
    var qs = [];

    for (k in qk) {

        if (!qk.hasOwnProperty(k)) {
            continue;
        }

        var v = encodeURIComponent(qk[k]);

        k = encodeURIComponent(k);

        if (v) {
            qs.push(k + "=" + v);
        } else {
            qs.push(k);
        }
    }

    if (qs.length > 0) {
        uri += "?" + qs.join("&")
    }

    if (u.anchor) {
        uri += "#" + u.anchor
    }

    return uri;
}