How to Get the current url and redirect to other url(case:button click english to arabic screen using parameter in url) using jquery,mvc,c#

 

 <a class="btn btn-icon btn-clean btn-lg w-40px h-40px btnlang" id="btnlang" > Change Lang </a>

sample url: https://localhost:44310/Claims/AddClaim?lang=en

<script src="~/lib/jquery/dist/jquery.min.js"></script>

<script>

    $(document).ready(function () {

        $('.btnlang').click(function () {

            debugger;

            var pageURL = $(location).attr("href");//gets the current url

            var baseaddress = pageURL.substring(0, pageURL.indexOf('?'));//get the base address before '?'

            var tech = getUrlParameter('lang');//gets the parameter using parameter name i.e,lang

            if (tech == "en") {

                location.href = baseaddress + "?lang=ar";

            } else if (tech == "ar") {

                location.href = baseaddress + "?lang=en";

            }

        });

        var width = screen.width,

            height = screen.height;

        if (width <= 600) {

            $('#kt_aside').removeClass('aside-overlay');

        }

    });

    var getUrlParameter = function getUrlParameter(sParam) {

        var sPageURL = window.location.search.substring(1),

            sURLVariables = sPageURL.split('&'),

            sParameterName,

            i;

        for (i = 0; i < sURLVariables.length; i++) {

            sParameterName = sURLVariables[i].split('=');

            if (sParameterName[0] === sParam) {

                return sParameterName[1] === undefined ? true : decodeURIComponent(sParameterName[1]);

            }

        }

    };

</script>