title: Is it possible to configure a required field to ignore white space?
body: <p>The <a href="http://www.w3.org/html/wg/drafts/html/master/forms.html#the-required-attribute">required</a> attribute in HTML5 is very handy:</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;input type="text" required&gt;
  </code></pre>
  
  <p>But it still allows users to enter white space only.
  Is there an HTML-only solution to this?</p>