title: javascript innerHTML adding instead of replacing
body: <p>quick question, i know we can <strong>change</strong> the content of a</p>
  
  <p><code>&lt;div id="whatEverId"&gt;hello one&lt;div&gt;</code> by using:</p>
  
  <pre><code>document.getElementById("whatEverId").innerHTML="hello two";
  </code></pre>
  
  <p>now, is there a way I can <strong>ADD</strong> stuff to the div instead of replacing it???
  so i can get </p>
  
  <p><code>&lt;div id="whatEverId"&gt;hello one hello two&lt;div&gt;</code></p>
  
  <p><em>(using something similar of course)</em></p>