@angular/router

Route Configuration

Defines routes in an Angular application, associating paths with components.

const routes: Routes = [
  { path: 'home', component: HomeComponent },
  { path: 'about', component: AboutComponent }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

Router Outlet

A placeholder that Angular dynamically fills based on the current router state.

<router-outlet></router-outlet>

Navigation

Programmatically navigate to different routes within an Angular application.

constructor(private router: Router) { }

navigateToHome() {
  this.router.navigate(['/home']);
}

Route Parameters

Access parameters for a given route, often used for fetching data based on the URL.

constructor(private route: ActivatedRoute) { }

ngOnInit() {
  this.route.paramMap.subscribe(params => {
    this.userId = params.get('id');
  });
}

Route Guards

Protect routes with guards that can allow or prevent navigation to a route based on logic such as authentication.

@Injectable({ providedIn: 'root' })
export class AuthGuard implements CanActivate {
  canActivate(
    next: ActivatedRouteSnapshot,
    state: RouterStateSnapshot): Observable<boolean> | Promise<boolean> | boolean {
    return this.authService.isAuthenticated();
  }
}