title: jquery mobile - how to pre-fill text input of type date-time-local
body: <p>In jquery mobile I have a form with a date-time-local input field:</p>
  
  <pre><code>&lt;div class="schedule" data-role="fieldcontain"&gt;
     &lt;label for="start_at"&gt;Start At:&lt;/label&gt;
     &lt;input id="start_at" name="start_at" type="datetime-local" value="" /&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>This input field shows the template [dd-mm-jjjj --:--] on screen to enter a date and time.</p>
  
  <p>But how can you pre-fill such a field with a date and time from a database or with javascript?</p>
  
  <p>I tried to pre-fill it with value "31-12-2013 15:35" and with a date in milliseconds, but nothing works so far.</p>