constructor(router:Router) { router.events.subscribe(event:Event => { if(event instanceof NavigationStart) { } // NavigationEnd // NavigationCancel // NavigationError // RoutesRecognized } } 

constructor(router:Router) { router.events.subscribe(event:Event => { if(event instanceof NavigationStart) { } // NavigationEnd // NavigationCancel // NavigationError // RoutesRecognized } } 

or

constructor(router:Router) { router.events.forEach(event:Event => { 

constructor(router:Router) { router.events.subscribe(event:Event => { if(event is NavigationStart) { } // NavigationEnd // NavigationCancel // NavigationError // RoutesRecognized } } 

constructor(router:Router) { router.events.subscribe(event:Event => { if(event instanceof NavigationStart) { } // NavigationEnd // NavigationCancel // NavigationError // RoutesRecognized } }