title: How to target body in javascript DOM event
body: <p>I would like to modify a style which looks like: </p>
  
  <pre><code>&lt;body class="theme1"&gt;
  </code></pre>
  
  <p>I would like to target this body's class and make that to just <code>&lt;body&gt;</code>. The problem is that, even though I would normally find elements using <code>document.getElementById('someId')</code> or by <code>tagName</code> in this case, I don't know how to find the target.</p>