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// path
var pth = window.location.pathname;

$.urlParam = function(name){
	var results = new RegExp('[\?&]' + name + '=([^&#]*)').exec(window.location.href);
	return results[1] || 0;
}

// example.com?param1=name&param2=&id=6
$.urlParam('param1'); // name
$.urlParam('id');        // 6
$.urlParam('param2');   // null

//example params with spaces
http://www.jquery4u.com?city=Gold Coast
console.log($.urlParam('city'));  
//output: Gold%20Coast

console.log(decodeURIComponent($.urlParam('city')));  
//output: Gold Coast

//src: https://www.sitepoint.com/url-parameters-jquery/