REGEX: window.location.search

regex_search.js

// version 1
function search(name) {
	name = name.replace(/[\[]/g, '\\\[').replace(/[\]]/g, '\\\]');
	name = encodeURIComponent(name);
	var regex = new Regex('[/?&]' + name + '=([^&#]*)');
	var results = regex.exec(window.location.search);
	return results === null ? '' : decodeURIComponent(results[1]);
}

// version 2
(function() {
	var searchObj = {};
	var regex = /[/?&]([^=&#]+)=([^&#]*)/g;
	var allStr = window.location.search.replace(regex, function(str, key, value) {
		searchObj[decodeURIComponent(key)] = decodeURIComponent(value);
		return str;
	});
	searchObj.toString = function(){return allStr;}
	return searchObj;
})();