Ajax Call Back

ajaxCallBack.js

(function (document, window, $) {
    'use strict';
    var TestModule = {
        //--------------------------
        funA: function () {
            TestModule.handleAjax("http://google.com", {q: "test"}, "GET", "funB");
        },
        //--------------------------
        funB: function (data) {
            console.log(data);
        },
        //--------------------------
        funC: function () {
            TestModule.handleAjax("http://bing.com", {q: "test"}, "GET", "funD");
        },
        //--------------------------
        funD: function (data) {
            console.log(data);
        },
       //--------------------------
        handleAjax: function (url, data, method, callbackfn) {
            $.ajax({
                method: "POST",
                url: url,
                data: data,
                async: true,
                context: this
            }).done(function (response) {
                TestModule.callbackfn(response) //<---------------- this should call after the ajax
            });
        }
        //--------------------------
        run: function () {
            TestModule.funA();
        }
    };
    //------------------------------------------------
    window.TestModule = TestModule;
    //------------------------------------------------
    $(document).ready(function () {
        TestModule.run();
        
    });
    //------------------------------------------------
})(document, window, jQuery);