A login controller for AngularJS. This relies on authService.js for token storage, and retrieval.

LoginCtrl.js

app.controller('LoginCtrl', ['$scope', '$http', '$location', 'authService',
        function ($scope, $http, $location, authService) {
            $scope.submit = function () {

                $http.post('/authenticate', this.form)
                    .success(function (data, status, headers, config) {

                        // save json web token in session storage
                        authService.saveToken(data.token);

                        // passes the user to scope for display
                        $scope.user = authService.getUser();

                        // redirect to home page
                        $location.path('/home');

                    }).error(function () {
                        // wipe out the stored token
                        authService.logout();
                        $scope.form.password = '';
                    })
            };
        }
    ]);