Jquery get parameter value

http://www.sitepoint.com/url-parameters-jquery/

$.urlParam('id') ==> 

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

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