>ng g m Dashboard -m app.module --routing
>ng g c Dashboard/ProtectedPage

import { DashboardModule } from "./dashboard/dashboard.module";

@NgModule({
  imports: [
    //...
    DashboardModule,
    AppRoutingModule
  ]
})
export class AppModule { }

import { ProtectedPageComponent } from "./protected-page/protected-page.component";

const routes: Routes = [
  { path: "protectedPage", component: ProtectedPageComponent }
];

export class LoginComponent implements OnInit {

  model: Credentials = { username: "", password: "", rememberMe: false };
  error = "";
  returnUrl: string;

  constructor(
    private authService: AuthService,
    private router: Router,
    private route: ActivatedRoute) { }

  ngOnInit() {
    // reset the login status
    this.authService.logout(false);

    // get the return url from route parameters
    this.returnUrl = this.route.snapshot.queryParams["returnUrl"];
  }

  submitForm(form: NgForm) {
    this.error = "";
    this.authService.login(this.model)
      .subscribe(isLoggedIn => {
        if (isLoggedIn) {
          if (this.returnUrl) {
            this.router.navigate([this.returnUrl]);
          } else {
            this.router.navigate(["/protectedPage"]);
          }
        }
      },
      (error: HttpErrorResponse) => {
        console.log("Login error", error);
        if (error.status === 401) {
          this.error = "Invalid User name or Password. Please try again.";
        } else {
          this.error = `${error.statusText}: ${error.message}`;
        }
      });
  }

<div class="panel panel-default">
  <div class="panel-heading">
    <h2 class="panel-title">Login</h2>
  </div>
  <div class="panel-body">
    <form #form="ngForm" (submit)="submitForm(form)" novalidate>
      <div class="form-group" [class.has-error]="username.invalid && username.touched">
        <label for="username">User name</label>
        <input id="username" type="text" required name="username" [(ngModel)]="model.username"
          #username="ngModel" class="form-control" placeholder="User name">
        <div *ngIf="username.invalid && username.touched">
          <div class="alert alert-danger"  *ngIf="username.errors['required']">
            Name is required.
          </div>
        </div>
      </div>

      <div class="form-group" [class.has-error]="password.invalid && password.touched">
        <label for="password">Password</label>
        <input id="password" type="password" required name="password" [(ngModel)]="model.password"
          #password="ngModel" class="form-control" placeholder="Password">
        <div *ngIf="password.invalid && password.touched">
          <div class="alert alert-danger"  *ngIf="password.errors['required']">
            Password is required.
          </div>
        </div>
      </div>

      <div class="checkbox">
        <label>
          <input type="checkbox" name="rememberMe" [(ngModel)]="model.rememberMe"> Remember me
        </label>
      </div>

      <div class="form-group">
        <button type="submit" class="btn btn-primary" [disabled]="form.invalid ">Login</button>
      </div>

      <div *ngIf="error" class="alert alert-danger " role="alert ">
        {{error}}
      </div>
    </form>
  </div>
</div>

export class HeaderComponent implements OnInit, OnDestroy {

  title = "Angular.Jwt.Core";

  isLoggedIn: boolean;
  subscription: Subscription;
  displayName: string;

  constructor(private authService: AuthService) { }

  ngOnInit() {
    this.subscription = this.authService.authStatus$.subscribe(status => {
      this.isLoggedIn = status;
      if (status) {
        this.displayName = this.authService.getDisplayName();
      }
    });
  }

  ngOnDestroy() {
    // prevent memory leak when component is destroyed
    this.subscription.unsubscribe();
  }

  logout() {
    this.authService.logout(true);
  }

<nav class="navbar navbar-default">
  <div class="container-fluid">
    <div class="navbar-header">
      <a class="navbar-brand" [routerLink]="['/']">{{title}}</a>
    </div>
    <ul class="nav navbar-nav">
      <li class="nav-item" routerLinkActive="active" [routerLinkActiveOptions]="{ exact: true }">
        <a class="nav-link" [routerLink]="['/welcome']">Home</a>
      </li>
      <li *ngIf="!isLoggedIn" class="nav-item" routerLinkActive="active">
        <a class="nav-link" queryParamsHandling="merge" [routerLink]="['/login']">Login</a>
      </li>
      <li *ngIf="isLoggedIn" class="nav-item" routerLinkActive="active">
        <a class="nav-link" (click)="logout()">Logoff [{{displayName}}]</a>
      </li>
      <li *ngIf="isLoggedIn" class="nav-item" routerLinkActive="active">
        <a class="nav-link" [routerLink]="['/protectedPage']">Protected Page</a>
      </li>
    </ul>
  </div>
</nav>

import { Component, OnInit } from "@angular/core";
import { AuthService } from "../../core/services/auth.service";

@Component({
  selector: "app-protected-page",
  templateUrl: "./protected-page.component.html",
  styleUrls: ["./protected-page.component.css"]
})
export class ProtectedPageComponent implements OnInit {

  decodedAccessToken: any = {};
  accessTokenExpirationDate: Date = null;

  constructor(private authService: AuthService) { }

  ngOnInit() {
    this.decodedAccessToken = this.authService.getDecodedAccessToken();
    this.accessTokenExpirationDate = this.authService.getAccessTokenExpirationDate();
  }
}

<h1>
  Decoded Access Token
</h1>

<div class="alert alert-info">
  <label> Access Token Expiration Date:</label> {{accessTokenExpirationDate}}
</div>

<div>
  <pre>{{decodedAccessToken | json}}</pre>
</div>