examples.waku.org/examples/relay-angular-chat/src/app/messages/messages.component.html

<button (click)="sendMessage()" [disabled]="wakuStatus !== 'Connected'">
  Send Message
</button>
<h2>Messages</h2>
<ul class="messages">
  <li *ngFor="let message of messages">
    <span>{{ message.timestamp }} {{ message.text }}</span>
  </li>
</ul>