title: Structure of an iframe
body: <p>I have a question about iframe.</p>
  
  <p>For iframe, we normally see:</p>
  
  <pre><code>&lt;iframe src="http://www.google.com" /&gt;
  </code></pre>
  
  <p>Could we put IP address instead? (for example)</p>
  
  <pre><code>&lt;iframe src="http://192.142.1.1" /&gt;
  </code></pre>