parse-url-location-info.js

var parseLocation = (function () {
  var a = document.createElement('a');

  function parseLocation(url) {
    a.href = url;

    var protocol = (!a.protocol || a.protocol === ':') ? location.protocol : a.protocol;
    // IE8 inconsistently returns leading slash
    var pathname = (a.pathname.match(/^\//)) ? a.pathname : '/' + a.pathname;

    return {
      hash: a.hash,
      host: a.host || location.host,
      hostname: a.hostname || location.hostname,
      href: a.href,
      pathname: pathname,
      port: a.port || location.port,
      protocol: protocol,
      search: a.search
    };
  }

  return parseLocation;
})();