403: function(jqXHR) {
                var error = jqXHR.responseText;
                console.log(error);
            }

HttpError: Wrong password<br> &nbsp; &nbsp;at
c:Users...path...js:18:29<br> &nbsp; &nbsp;at
c:Users...path...async.js:52:16<br> &nbsp; &nbsp;at
Immediate._onImmediate
(c:Users...path...node_modulesasynclibasync.js:1201:34)<br>
&nbsp; &nbsp;at processImmediate [as _immediateCallback]
(timers.js:383:17)

var error = JSON.parse(jqXHR.responseText);
    console.log(error.message);

SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data
.complete()
m.Callbacks/j()
m.Callbacks/k.fireWith()
x()
.send/b()

schema.statics.authorize = function(username, password, callback) {
        var User = this;

        async.waterfall([
            function(callback) {
                User.findOne({username: username}, callback);
            },
            function(user, callback) {
                if (user) {
                    if (user.checkPassword(password)) {
                        callback(null, user);
                    } else {
                        callback(new AuthError("Wrong password"));
                    }
                } else {
                    var user = new User({username: username, password: password});
                    user.save(function(err) {
                        if (err) return callback(err);
                        callback(null, user);
                    });
                }
            }
        ], callback);
    };


    exports.User = mongoose.model('User', schema);




    function AuthError(message) {
        Error.captureStackTrace(this, AuthError);

        this.message = message;
    }

    util.inherits(AuthError, Error);

    AuthError.prototype.name = 'AuthError';

    exports.AuthError = AuthError;