I have a REST service. Which is having JWT authorization. To get the token, you need to send POST request to '/login' endpoint with JSON:
{
  'username':'username',
  'password':'password'
}
After that you receive JSON, for example:
{
  'token': "a1a1.b2b2.c3c3"
} 
I'm new to AngularJS and JavaScript itself, so I'm playing with basics for now. Just trying to get a token from login service.
index.html
<!DOCTYPE html>
<html ng-app="app">
<head>
   <meta charset="UTF-8">
   <title>app</title>
   <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.5.5/angular.min.js"></script>
   <script src="app.js"></script>
   <script src="service.js"></script>
</head>
<body class="container" ng-controller="AppController as app">
 <div ng-controller="ServiceController as service">
   <p>{{service.login()}}</p>
 </div>
</body>
</html>
app.js
(function () {
  var app = angular.module('app',['service']);
  app.controller('AppController', function () {
  });
})();
service.js
angular.module('service', [])
.controller('ServiceController', ['$http', function ($http){
   var url = 'http://localhost:8080/login';
   var resp = 'lol';
  var credentials = { 'username' : "username", 'password' : "password" };
  this.getToken = function () {
    return $http.post(url, credentials).success(function(response) {
        angular.forEach(response.data.token, function(token) {
            resp = token;
        });
    });
    };
 this.getToken();
 this.login = function () {
     return resp;
 };
}]);
So when I open index.html it's getting me lol instead of JSON response that I'm expecting. Whats wrong with that?
EDIT2:
service.js
angular.module('service', [])
.controller('ServiceController', ['$http', function ($http){
   var url = 'http://localhost:8080/login';
   var resp = 'lol';
  var credentials = { 'username' : "username", 'password' : "password" };
 $http.defaults.headers.common['Content-Type']= 'application/json';
 $http.defaults.headers.common['Access-Control-Allow-Origin'] = '*';
 *this.getToken = function () {
    return $http.post(url, credentials).success(function(response) {
            resp = response.data.token;
    });
    };*
 this.getToken();
 this.login = function () {
     return resp;
 };
}]);
