title: Add class with setTimeout without Jquery
body: <p>Is it possible to convert this jquery script to non-jquery script?</p>
  
  <pre><code>window.setTimeout(function(){$("#fullcontent").addClass("onload");}, 2100);
  </code></pre>
  
  <p>I would like to add <code>class</code> "onload" to the <code>div</code> called "fullcontent" with <code>setTimeout</code> of 2,1s. </p>