title: How to bind to an item in an ngFor loop in Ionic 2?
body: <p>In my template, I have</p>
  
  <pre><code>&lt;ion-card *ngFor="let item of items"&gt;
      &lt;p&gt;{{ item.timespan }}&lt;/p&gt;
  &lt;/ion-card&gt;
  </code></pre>
  
  <p>However, instead of displaying the value inside the loop, I want to bind to it from somewhere else in the template, outside the ngFor loop, like</p>
  
  <pre><code>&lt;h1&gt;{{ timespan }}&lt;/h1&gt;
  &lt;ion-card *ngFor="let item of items" [timespan]=“item.timespan”&gt;
      …
  &lt;/ion-card&gt;
  </code></pre>
  
  <p>But I assume I can’t use [timespan] since it is not an input property of ion-card.. </p>
  
  <p>So does anyone know how else I can implement this binding?</p>
  
  <p>Any help greatly appreciated.</p>