Parses a URL and returns an object with the same API as window.location with the addition of a "query" attribute which is a hash of query params. Requires underscore.js

parseurl.js

function parseUrl(str) {
  var link = document.createElement('a');
  link.href = str;
  // Parse query string. Strip leading ?, decode, and split
  var pairs = /^\??(.*)/.exec(decodeURI(link.search))[1].split('&');
  // Split pairs and create object from tuples
  var query = _.object(_.invoke(pairs, 'split', '='));
  // Other url properties to copy
  var props = [
    'hash',
    'host',
    'hostname',
    'origin',
    'pathname',
    'port',
    'protocol',
    'search'
  ];
  // Return parsed URL
  return _.extend({query: query}, _.pick(link, props));
}