routing - Angular router url returns slash -

i'm trying current router path using router, when console.log(this.router.url) returns "/", although i'm on "/login". when i'm consoling entire this.router object, there property url has value "/login".

here code app.component.ts

export class appcomponent implements oninit{   constructor(private router: router) {}    ngoninit(){     console.log(this.router);   }  } 

app.module.routing.ts

import {ngmodule} '@angular/core'; import {preloadallmodules, routermodule, routes} '@angular/router';  import {notfoundcomponent} './not-found/not-found.component'; import {authguard} './auth/auth-guard.service';  const approutes: routes = [   { path: '', loadchildren: './first/first.module#firstmodule'},   { path: 'login', loadchildren: './login/login.module#loginmodule'},   { path: '404', component: notfoundcomponent, canactivate: [authguard] },   { path: '**', redirectto: '/404'} ];  @ngmodule({   imports: [routermodule.forroot(approutes, {preloadingstrategy: preloadallmodules})],   exports: [routermodule] }) export class appmodulerouting {} 

and firstmodule routing:

import {ngmodule} '@angular/core'; import {routermodule, routes} '@angular/router';  import {firstcomponent} './first.component'; import {authguard} '../auth/auth-guard.service';  const firstroutes: routes = [   { path: '', component: firstcomponent, canactivate: [authguard], children:[     { path: '', loadchildren: './content-container/container.module#containermodule' }   ]} ]; @ngmodule({   imports: [routermodule.forchild(firstroutes)],   exports: [routermodule] }) export class firstroutes {} 

type 1.we can use window.location.pathname

type 2.constructor(router: router) {         router.events.subscribe((url:any) => console.log(url));        console.log(router.url);  // print path eg:"/login" }