router-outlet angular code example
Example 1: ng router link
<a [routerLink]="['/user/bob']" [queryParams]="{debug: true}" fragment="education">
link to user component
</a>
Example 2: how to create app.routing.module.ts in angular 6
ng generate module app-routing --flat --module=app
Example 3: angular router outlet
<router-outlet></router-outlet>
<router-outlet name='left'></router-outlet>
<router-outlet name='right'></router-outlet>