example.js

    success: function(data) {
        var isCallBackConfirmed = false;
        var token = '';
        var vars = data.text.split("&");
        for (var i = 0; i < vars.length; i++) {
            var y = vars[i].split('=');
            if(y[0] === 'oauth_token')  {
                token = y[1];
            }
            else if(y[0] === 'oauth_token_secret') {
                this.oauth_token_secret = y[1];
                localStorage.setItem("oauth_token_secret", y[1]);
            }
            else if(y[0] === 'oauth_callback_confirmed') {
                isCallBackConfirmed = true;
            }
        }
        var ref;
        if(isCallBackConfirmed) {
            // step 2
            ref = window.open(app.evernoteHostName + '/OAuth.action?oauth_token=' + token, '_blank');
            ref.addEventListener('loadstart',
                function(event) {
                    var loc = event.url;
                    if (loc.indexOf(app.evernoteHostName + '/Home.action?gotOAuth.html?') >= 0) {
                        var index, verifier = '';
                        var got_oauth = '';
                        var params = loc.substr(loc.indexOf('?') + 1);
                        params = params.split('&');
                        for (var i = 0; i < params.length; i++) {
                            var y = params[i].split('=');
                            if(y[0] === 'oauth_verifier') {
                                verifier = y[1];
                            }
                        }
                    } else if(y[0] === 'gotOAuth.html?oauth_token') {
                        got_oauth = y[1];
                    }
                    // step 3
                    oauth.setVerifier(verifier);
                    oauth.setAccessToken([got_oauth, localStorage.getItem("oauth_token_secret")]);

                    var getData = {'oauth_verifier':verifier};
                    ref.close();
                    oauth.request({'method': 'GET', 'url': app.evernoteHostName + '/oauth',
                        'success': app.success, 'failure': app.failure});

                }
            );
        } else {
            // Step 4 : Get the final token
            var querystring = app.getQueryParams(data.text);
            var authTokenEvernote = querystring.oauth_token;
            // authTokenEvernote can now be used to send request to the Evernote Cloud API
            
            // Here, we connect to the Evernote Cloud API and get a list of all of the
            // notebooks in the authenticated user's account:
            var noteStoreURL = querystring.edam_noteStoreUrl;
            var noteStoreTransport = new Thrift.BinaryHttpTransport(noteStoreURL);
            var noteStoreProtocol = new Thrift.BinaryProtocol(noteStoreTransport);
            var noteStore = new NoteStoreClient(noteStoreProtocol);
            noteStore.listNotebooks(authTokenEvernote, function (notebooks) {
                console.log(notebooks);
            }
        },
        function onerror(error) {
            console.log(error);
        });

    },
    failure: function(error) {
        console.log('error ' + error.text);
    }

There's an error on lines 32-38. They should read:

                            if(y[0] === 'oauth_verifier') {
                                verifier = y[1];
                            } else if(y[0] === 'gotOAuth.html?oauth_token') {
                                got_oauth = y[1];
                            }
                    }