title: how to check if Div exist in iframe
body: <p>Hi guys i want to check if <strong>DIV test</strong> exists in iframe show alert"</p>
  
  <pre><code> &lt;html&gt;
    &lt;body&gt;
     &lt;div id="test"&gt;test&lt;/div&gt;
    &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>I loaded this html file to my iframe. How can i check if <strong>DIV test</strong> exists ?</p>
  
  <pre><code>&lt;iframe src="1.html" width="80%" height="600" id="frameDemo"&gt;&lt;/iframe&gt;
  </code></pre>