离子如何在注销/登录时显示/隐藏内容

<ion-content>
  <ion-button (click)="logout()">注销</ion-button>
  <div *ngIf="isLoggedIn">
    <!-- 显示的内容 -->
    <p>欢迎登录！</p>
  </div>
  <div *ngIf="!isLoggedIn">
    <!-- 隐藏的内容 -->
    <p>请先登录！</p>
  </div>
</ion-content>

import { Component } from '@angular/core';

@Component({
  selector: 'app-home',
  templateUrl: 'home.page.html',
  styleUrls: ['home.page.scss'],
})
export class HomePage {
  isLoggedIn: boolean = false;

  logout() {
    // 执行注销操作
    // ...

    // 更新isLoggedIn变量的值
    this.isLoggedIn = false;
  }
}