title: do content added to DOM count for the total page load time?
body: <p>I mean if I append some contents like this:</p>
  
  <pre><code>&lt;body&gt;
   //contents
   &lt;script&gt;body.appendChild('&lt;img src="new.png"&gt;');
   // other contents
  &lt;/body&gt;
  </code></pre>
  
  <p>the browser will fire window.onload considering only the original html or it will take in consideration the load of the new image too? (<code>new.png</code>) ?</p>