Angular2 ChangeDetection or Observable?

Question

I\'m having difficulty with a component that doesn\'t refresh upon log in.

The component is navbar.component that contains links to my pages/components. On it, there

Answer 1

export class UserService {
  isLoggedIn:BehaviorSubject = new BehaviorSubject(false);
}

@Component({
...
template: `
Login
Logout
`

})
export class MyComponent {
  constructor(private userService: UserService) {}
}