Angular2 watch for route change

If you are using

"@angular/router": "3.0.0-alpha.7", 
"@angular/router-deprecated": "2.0.0-rc.2",

then

this.router.events.subscribe((event) => {
      console.log('route changed');
});

In the final version of Angular (e.g. Angular 2/4), you can do this

this.router.events.subscribe((event) => {
    if(event.url) {
        console.log(event.url);
    }
});

Every time the route changes, events Observable has the info. Click here for docs.

Here's what I use in my app. You can subscribe to a Route instance to track changes.

class MyClass {
  constructor(private router: Router) {
    router.subscribe((val) => /*detect changes*/)
  }
}

event is observable so you can subscribe to it, I have successfully tried it in angular5

this.router.events.subscribe((event) => {
console.log(event);
 if(event['url'] && event['url'] == '/') {
    console.log('Home page');
    //any other functionality you can do here
 }
});