Data Get From Query String int JavaScript

function getQuerystring(key, default_, getUser) {

            if (default_ == null) default_ = "";

            key = key.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");

            var regex = new RegExp("[\\?&]" + key + "=([^&#]*)");

            var qs = regex.exec(window.location.href);

            if (qs == null)

                return default_;

            else

                return qs[1];

        }

var getUser = getQuerystring('name');

                var getResetCode = getQuerystring('resetpassword');