title: How to replace a default date with an empty string
body: <p>I have a html span that display a date using moment.js in the page:</p>
  
  <pre><code>&lt;span data-bind="text: moment(new Date(dueDate())).format('MM/DD/YYYY')"&gt;&lt;/span&gt;
  </code></pre>
  
  <p>It's working fine apart if the <code>dueDate()</code> property is an empty string, If it's an empty string I'm getting:</p>
  
  <blockquote>
    <p>01/01/1900</p>
  </blockquote>
  
  <p>How can avoid that?</p>
  
  <p>This is the entire div:</p>
  
  <pre><code>&lt;div class="col-md-8"&gt;
      &lt;ul&gt;
        &lt;li&gt;DATE &lt;span data-bind="text: moment(new Date(sDate())).format('MM/DD/YYYY')"&gt;&lt;/span&gt;&lt;/li&gt;
        &lt;li&gt;Due date &lt;span&gt;&lt;/span&gt;&lt;span data-bind="text: moment(new Date(dueDate())).format('MM/DD/YYYY')"&gt;&lt;/span&gt;
             &lt;p&gt;Days Remaining: &lt;span class="days-remaining" data-bind="text: daysRemaining"&gt;&lt;/span&gt;&lt;/p&gt;
        &lt;/li&gt;
        &lt;li&gt;Date 2 &lt;span&gt;&lt;/span&gt;&lt;span data-bind="text: moment(new Date(date2())).format('MM/DD/YYYY')"&gt;&lt;/span&gt;
             &lt;p&gt;Days Remaining: &lt;span class="days-remaining" data-bind="text: daysRemaining"&gt;&lt;/span&gt;&lt;/p&gt;
        &lt;/li&gt;
      &lt;/ul&gt;
  &lt;/div&gt;
  </code></pre>