This question has already asked.
When we click the second time on a link like that <a routerLink="/home" routerLinkActive="active">Home</a>
, the page does not reload.
Angular2 Router3 - Can't reload/refresh active route
Angular 2 reloads routerLink user clicks again
But it has been solved when angular 2 was in beta version and there was an angular issue regarding the question.
Now that we have angular 4, I will ask if the answers provided are still the best way to solve the issue.