ionic-framework/e2e/menu/basic/page2.html

<ion-navbar *navbar>

  <button menu-toggle="leftMenu">
    <icon menu></icon>
  </button>

  <ion-title>
    Menu
  </ion-title>

</ion-navbar>

<ion-content padding>

  <h3>Page 2</h3>

  <p>
    <button menu-toggle="leftMenu" class="e2eContentToggleMenu">Toggle Left Menu</button>
  </p>

  <p>
    <button (click)="page3()">Go to page 3</button>
  </p>

</ion-content>