angular router doesn't recognize update name code example

Example 1: angular [routerlink]

content_copy
      
      <a [routerLink]="['/user/bob']" [queryParams]="{debug: true}" fragment="education">
  link to user component
</a>

Example 2: how to add changes every time you route navigate to page in angular

// Place import at the top
import { Router,NavigationStart} from '@angular/router';

//Place the code below inside your class
constructor(private router: Router){}

ngOnInit(){
   this.router.events.subscribe(event =>{
      if (event instanceof NavigationStart){
   		
      }
   })
}