下面是我的代码来获得每个标题：

export class WrapperComponent implements OnInit, OnDestroy {
  DASHBOARD = 'Dashboard'
  DASHBOARD_URL = 'dashboard'
  PERSONAL_INFORMATION = 'Personal Information'
  PERSONAL_INFORMATION_URL = 'personal-information'
  EMPLOYEE_HISTORY = 'Employee History'
  EMPLOYEE_HISTORY_URL = 'employee-history'
  navBarTitle = this.DASHBOARD
  subs: Subscription[] = [];
  constructor(private router: Router) {}

  ngOnInit(): void {
    this.subToRouterEvents();
  }

  ngOnDestroy(): void {
    if (0 === this.subs.length) {
      return;
    }
    this.subs.forEach((sub) => sub.unsubscribe());
  }

  subToRouterEvents() {
    const routeEventSub = this.router.events.subscribe(this.routerEventHandler);
    this.subs.push(routeEventSub);
  }

  routerEventHandler = (event: Event) => {
    if (event instanceof NavigationEnd) {
      const routeText = this.router.url.split('/');
      this.evalRouteUrl(routeText[3]);
    }
  };
  evalRouteUrl(url: string) {
    if ('undefined' === typeof url) return;
    this.navBarTitle = url === this.DASHBOARD_URL ? this.DASHBOARD : this.PERSONAL_INFORMATION
  }
}

这是我的html代码：

<nav aria-label="breadcrumb">
      <ol class="breadcrumb bg-transparent mb-0 pb-0 pt-1 px-0 me-sm-6 me-5">
        <li class="breadcrumb-item text-sm" *ngIf="navBarTitle === 'Personal Information'">
          <a class="opacity-5 text-white">My Account</a>
        </li>
        <li
          class="breadcrumb-item text-sm text-white active"
          aria-current="page" *ngIf="navBarTitle === 'Personal Information'"
        >
          My Profile
        </li>
        <li
          class="breadcrumb-item text-sm text-white active"
          aria-current="page"
        >
          {{ navBarTitle }}
        </li>
      </ol>
      <h6 class="font-weight-bolder text-white mb-0 text-uppercase">
        {{ navBarTitle }}
      </h6>
    </nav>

任何人都可以帮助我得到导航栏的标题...我有这个代码，但它只需要2个选项。这将是一个很大的帮助我。
是否有可能扩展此代码，如有超过2个选项？

evalRouteUrl(url: string) {
    if ('undefined' === typeof url) return;
    this.navBarTitle = url === this.DASHBOARD_URL ? this.DASHBOARD : this.PERSONAL_INFORMATION
  }