JS: URI and Query String Parsing

uri.js

var parser = document.createElement('a');
parser.href = "http://example.com:3000/pathname/?search=test#hash";

parser.protocol; // => "http:"
parser.hostname; // => "example.com"
parser.port;     // => "3000"
parser.pathname; // => "/pathname/"
parser.search;   // => "?search=test"
parser.hash;     // => "#hash"
parser.host;     // => "example.com:3000"

var getQueryVariable = function(variable) {
	var query = window.location.search.substring(1);
	var vars = query.split('&');
	for (var i = 0; i < vars.length; i++) {
		var pair = vars[i].split('=');
		var queryVariable = decodeURIComponent(pair[0]);
		var value = decodeURIComponent(pair[1]);
		if (queryVariable == variable) {
			return value;
		}
	}
	return false;
};