title: How can I hide ionic item?
body: <p>I have some input fields.But the input fields will show once at a time. I will get the info which one i need to show like below.</p>
  
  <pre><code>require_nid:false
  require_pin:true
  </code></pre>
  
  <p>The from is below</p>
  
  <pre><code>&lt;ion-col&gt;
            &lt;ion-list inset&gt;
              &lt;ion-item&gt;
                &lt;ion-label&gt;
                    &lt;ion-icon name="person"&gt;&lt;/ion-icon&gt;
                &lt;/ion-label&gt;
                &lt;ion-input type="text" placeholder="Enter NID" #username required&gt;&lt;/ion-input&gt;
              &lt;/ion-item&gt;
              &lt;ion-item&gt;
                &lt;ion-label&gt;
                    &lt;ion-icon name="person"&gt;&lt;/ion-icon&gt;
                &lt;/ion-label&gt;
                &lt;ion-input type="text" placeholder="Enter sender Name" #password required&gt;&lt;/ion-input&gt;
              &lt;/ion-item&gt;
              &lt;ion-item&gt;
                &lt;ion-label&gt;
                    &lt;ion-icon name="phone-portrait"&gt;&lt;/ion-icon&gt;
                &lt;/ion-label&gt;
                &lt;ion-input type="text" placeholder="Enter sender phone number" #password required&gt;&lt;/ion-input&gt;
              &lt;/ion-item&gt;
            &lt;/ion-list&gt;
          &lt;/ion-col&gt;
  </code></pre>