title: textarea placeholder does not work in IE10
body: <p>I'm setting <code>placeholder</code>s of <code>input</code> <code>text</code> and they works normally in <code>IE9+</code>.</p>
  
  <pre><code>&lt;textarea style="some-style" name="some-name" id="some-id" class="some-class" 
   placeholder="awesome placeholder"&gt;&lt;/textarea&gt;
  </code></pre>
  
  <p>This above does not work out.
  I tried also to use a <a href="https://github.com/mathiasbynens/jquery-placeholder" rel="nofollow">plugin</a>, but it does not change anything. Also tried to search through older questions but didn't find anything </p>
  
  <p><strong>EDIT</strong></p>
  
  <p>I noticed a strange behaviour: the content of the <code>textarea</code> on boot is the <code>text</code> of the <code>placeholder</code> and so not-empty, if I delete it then the <code>textarea</code> is empty and the <code>placeholder</code> works normally</p>