title: Setting lang attribute wont make change in input
body: <p>In HTML5, we can mention lang of input.</p>
  
  <p>Currently I have one input type=number field. If browser language is set to German then its allowing ',' (comma) but if browser language is set to English then it wont allow comma.</p>
  
  <p>So I added lang attribute for html tag only, but its not allowing comma.</p>
  
  <p>I have created <a href="http://jsbin.com/ruviyonaji/edit?html,output" rel="nofollow noreferrer">jsbin</a> for same.</p>
  
  <p>HTML:</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html lang='de-AT' xml:lang="de-AT"&gt;
  &lt;head&gt;
    &lt;meta name="viewport" content="width=device-width"&gt;
    &lt;title&gt;JS Bin&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
     &lt;input type="number"&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>What is best way to set language as German (de-AT) for input ?</p>