title: Is JQUERY inputmask can add string for datetime?
body: <p>Code for masking the time (HH:mm:ss)</p>
  
  <pre><code>$('.time').each(function () { 
          $(this).inputmask({
                  mask: "h:s:s",
                  placeholder: "00:00:00",
                  alias: "datetime",
                  hourFormat: "24"
          }); 
  });
  </code></pre>
  
  <p>How to mask a datetime which also accept a string like NONE? Can type a text but only None value is valid <strong>NONE or 01:00:00</strong></p>
  
  <p>I'm using the jquery inputmask library(<a href="https://github.com/RobinHerbots/jquery.inputmask" rel="nofollow noreferrer">https://github.com/RobinHerbots/jquery.inputmask</a>).</p>