How to handle query parameters in angular 2

Question

In my routable component I have

@RouteConfig {
  {path: \'/login\',   name: \'Login\', component: LoginComponent}
}  

But how

Answer 1

Angular2 v2.1.0 (stable):

The ActivatedRoute provides an observable one can subscribe.

  constructor(
     private route: ActivatedRoute
  ) { }

  this.route.params.subscribe(params => {
     let value = params[key];
  });

This triggers everytime the route gets updated, as well: /home/files/123 -> /home/files/321