title: How to convert milliseconds to a date string?
body: <p>I get a miliseconds string from the server like this: 1345623261.</p>
  
  <p>How can i convert this into a normal date format, e.g. 30.08.2012?</p>
  
  <p>I attempted using <code>setMilliseconds</code>, like so:</p>
  
  <pre class="lang-js prettyprint-override"><code>new Date().setMilliseconds(time_posted).toLocaleString();
  </code></pre>
  
  <p>But this doesn't work. How to do that?</p>