ParseURL.js

/* *******************************************************************************
 Hero authors of RFC 3986 (http://www.ietf.org/rfc/rfc3986.txt) gave us this regex 
 for parsing (well-formed) URLs into their constituent pieces:
 ^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?

 Which for the following URL:

 http://www.ics.uci.edu/pub/ietf/uri/#Related
 Yields in the following subexpression matches:

  $1 = http:
  $2 = http
  $3 = //www.ics.uci.edu
  $4 = www.ics.uci.edu
  $5 = /pub/ietf/uri/
  $6 = <undefined>
  $7 = <undefined>
  $8 = #Related
  $9 = Related

 where <undefined> indicates that the component is not present, as is
 the case for the query component in the above example.  Therefore, we
 can determine the value of the five components as

  scheme    = $2
  authority = $4
  path      = $5
  query     = $7
  fragment  = $9
********************************************************************************* */

var parseURL = function( url ) {
	var regex = RegExp("^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\\?([^#]*))?(#(.*))?");
	var matches =  url.match(regex);
	return {
		scheme: matches[2],
		authority: matches[4],
		path: matches[5],
		query: matches[7],
		fragment: matches[9]
	};
};

var parseQueryString = function( string ) {
	var query = {};
	string.split('&').forEach(function(item) { 
		query[item.split('=')[0]] = decodeURIComponent(item.split('=')[1]);
	});
	return query;
};

var prepareQueryString = function( object ) {
	var string = [];
	for (var param in object) {
		if (object.hasOwnProperty(param)) string.push(encodeURIComponent(param) + "=" + encodeURIComponent(object[param]));
	}
	return '?'+string.join("&");
};