diff --git a/readme.md b/readme.md
index da7bc48..c458d7f 100644
--- a/readme.md
+++ b/readme.md
@@ -212,6 +212,12 @@ requirejs(['ua-parser-js'], function(UAParser) {
 });
 ```
 
+## Using CDN
+
+```html
+<script src="https://cdn.jsdelivr.net/npm/ua-parser-js@0/dist/ua-parser.min.js"></script>
+```
+
 ## Using bower
 
 ```sh
diff --git a/src/ua-parser.js b/src/ua-parser.js
index 9d19dc6..c55212e 100644
--- a/src/ua-parser.js
+++ b/src/ua-parser.js
@@ -876,7 +876,7 @@
     /////////////////
     // Constructor
     ////////////////
-
+    /*
     var Browser = function (name, version) {
         this[NAME] = name;
         this[VERSION] = version;
@@ -891,7 +891,7 @@
     };
     var Engine = Browser;
     var OS = Browser;
-
+    */
     var UAParser = function (uastring, extensions) {
 
         if (typeof uastring === 'object') {
@@ -905,30 +905,35 @@
 
         var ua = uastring || ((window && window.navigator && window.navigator.userAgent) ? window.navigator.userAgent : EMPTY);
         var rgxmap = extensions ? util.extend(regexes, extensions) : regexes;
-        var browser = new Browser();
-        var cpu = new CPU();
-        var device = new Device();
-        var engine = new Engine();
-        var os = new OS();
+        //var browser = new Browser();
+        //var cpu = new CPU();
+        //var device = new Device();
+        //var engine = new Engine();
+        //var os = new OS();
 
         this.getBrowser = function () {
+            var browser = { name: undefined, version: undefined };
             mapper.rgx.call(browser, ua, rgxmap.browser);
             browser.major = util.major(browser.version); // deprecated
             return browser;
         };
         this.getCPU = function () {
+            var cpu = { architecture: undefined };
             mapper.rgx.call(cpu, ua, rgxmap.cpu);
             return cpu;
         };
         this.getDevice = function () {
+            var device = { vendor: undefined, model: undefined, type: undefined };
             mapper.rgx.call(device, ua, rgxmap.device);
             return device;
         };
         this.getEngine = function () {
+            var engine = { name: undefined, version: undefined };
             mapper.rgx.call(engine, ua, rgxmap.engine);
             return engine;
         };
         this.getOS = function () {
+            var os = { name: undefined, version: undefined };
             mapper.rgx.call(os, ua, rgxmap.os);
             return os;
         };
@@ -947,11 +952,11 @@
         };
         this.setUA = function (uastring) {
             ua = uastring;
-            browser = new Browser();
-            cpu = new CPU();
-            device = new Device();
-            engine = new Engine();
-            os = new OS();
+            //browser = new Browser();
+            //cpu = new CPU();
+            //device = new Device();
+            //engine = new Engine();
+            //os = new OS();
             return this;
         };
         return this;
diff --git a/test/test.js b/test/test.js
index 2fd033e..99e53ff 100644
--- a/test/test.js
+++ b/test/test.js
@@ -65,6 +65,21 @@ for (var i in methods) {
     });
 }
 
+describe('Returns', function () {
+    it('getResult() should returns JSON', function(done) {
+        assert.deepEqual(new UAParser('').getResult(), 
+            {
+                ua : '',
+                browser: { name: undefined, version: undefined, major: undefined },
+                cpu: { architecture: undefined },
+                device: { vendor: undefined, model: undefined, type: undefined },
+                engine: { name: undefined, version: undefined},
+                os: { name: undefined, version: undefined }
+        });
+        done();
+    });
+});
+
 describe('Extending Regex', function () {
     var uaString = 'Mozilla/5.0 MyOwnBrowser/1.3';
     var myOwnBrowser = [[/(myownbrowser)\/((\d+)?[\w\.]+)/i], [UAParser.BROWSER.NAME, UAParser.BROWSER.VERSION, UAParser.BROWSER.MAJOR]];