campus-help/src/app/tab3/login/login.page.html

<ion-header>
  <ion-toolbar>
    <ion-title>
      Login
    </ion-title>
  </ion-toolbar>
</ion-header>

<ion-content class="ion-padding">
  <ion-item>
    <ion-label position="floating">Username</ion-label>
    <ion-input type="text" [(ngModel)]="username"></ion-input>
  </ion-item>

  <ion-item>
    <ion-label position="floating">Password</ion-label>
    <ion-input type="password" [(ngModel)]="password"></ion-input>
  </ion-item>

  <ion-button expand="block" (click)="login()">Login</ion-button>
</ion-content>