execute a function whe the users change router angular code example

Example: angular how to run code every time you route

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

routerChangeMethod(url){
  this.title = url;
}