Return webmethod data in javascript function return value

Question

Hi,

 

i am developing a page in asp .net with javascript webmethod.

the webmethod is returing good data.

 

I have a functions.js file in that file i worte a function.

function getQData(ostrAgency, oSurID, oHIEPriv, oIsChecked)
{
    //debugger;
    var strData;
    var params = "{'strAgency':'" + ostrAgency + "', 'strSurID':'" + oSurID + "', 'strHIEPriv':'" + oHIEPriv + "','IsChecked':'" + oIsChecked + "'}";
    $.ajax({
        type: "POST",
        url: "Rpt.aspx/getQuesData",
        contentType: "application/json; charset=utf-8",
        data: params,
        dataType: "json",
        success: function (responce) {
            if (responce.d != '') {
                strData = responce.d;
                return strData;
            }
        },
        failure: function (responce) {
            debugger;
            alert(responce.d);
        },
        error: function (response) {
            debugger;
            alert(responce.d);
        }
    });
    return strData;
}

 i am calling this getQData method in frontend as

 $(document).ready(function () {
            event.preventDefault();
            LoadQuesData();
                });

        function LoadQuesData() {

            var ostrAgency = "";
            var oSurID = GetParameterValues('surID');
            var oHIEPriv = '<%=Session["HIEPRIV"]%>';
            var oIsChecked = false;
            if ($('#cntMain_rdoAgency').is(':checked')) {
                // strAgency = $('#ddlmasterAgency option:selected').text();
                ostrAgency = $('#ddlmasterAgency option:selected').val();
                oIsChecked = true;
            }
            debugger;
            var strData1 =getQData(ostrAgency, oSurID, oHIEPriv, oIsChecked);
            if (strData1 != "") {
                var otblTopQuestions = $("#tblTopQuestions");
                var strHTML = ""; var slno = 0;
                $.each(JSON.parse(strData1), function (index, value) {
                    // debugger;
                    slno++;
                    strHTML += ' + value.QUES_ID + '" type="checkbox" checked="checked" data-id=' + value.SQM_ID + '> Q' + slno + ' ' + value.SQM_QUES_DESC + '';
                });
                otblTopQuestions.append(strHTML);
            }
}

 in strData1 i am not getting the data. any help..???