title: jQuery FOR statement
body: <p>Hi I want to hide many elements. Do I need to hide each individually or can I use FOR?
  If so, how to do it?</p>
  
  <p>I've got this code:</p>
  
  <pre><code>   for (I=0; I &lt;11; I++){
        $('div#r'+I).hide();
     }
  </code></pre>
  
  <p>But I don't know what exacly write inside FOR and this one is probably wrong written.</p>