How to get URL’s & Querystrings using jQuery

URL = http://www.domain.com/post.aspx?postid=39&posttype=General
1. Get the current URL in jQuery
var currentURL = document.URL;
Result : http://www.domain.com/post.aspx?postid=39&posttype=General
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var currentURL = window.location.href;
Result : http://www.domain.com/post.aspx?postid=39&posttype=General

------------------------------------------------------------------
2.Get the pathname
var currentURL = location.pathname;
Result : post.aspx?postid=39&posttype=General

------------------------------------------------------------------
3.Get the hostname
var currentURL = location.hostname;
Result : www.domain.com

------------------------------------------------------------------
4.Get A URL Hash Parameter
var currentURL = location.hash;
Result : null

------------------------------------------------------------------
5.Read Querystring Parameters

 function GetQueryStringParams(sParam)
{
    var sPageURL = window.location.search.substring(1);
    var sURLVariables = sPageURL.split('&');
    for (var i = 0; i < sURLVariables.length; i++)
    {
        var sParameterName = sURLVariables[i].split('=');
        if (sParameterName[0] == sParam)
        {
            return sParameterName[1];
        }
    }
}

var postid = GetQueryStringParams('postId');
Result : 39

var posttype= GetQueryStringParams('posttype');
Result : General


 Or
 function GetParameterValues(param) {
        var url = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
        for (var i = 0; i < url.length; i++) {
           var urlparam = url[i].split('=');
            if (urlparam[0] == param) {
               return urlparam[1];
            }
       }
 }

 var postid = GetParameterValues('postId');
Result : 39
var posttype= GetParameterValues('posttype');
Result : General
------------------------------------------------------------------

URL = http://www.gigasters.com/post.aspx?postid=39

URL = http://www.gigasters.com/post.aspx?postid=39

URL = http://www.gigasters.com/post.aspx?postid=39

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