title: why I cant see any output on my reactjs app?
body: <p>I have started my first React lesson but I cant see any output on my localhost(3000), will you pls help me ?</p>
  <p>this is my JS code :</p>
  <pre><code>import React from 'react';
  import ReactDOM from 'react';
  
  const element = React.createElement(&quot;div&quot;, { id: &quot;title&quot;, className: &quot;app-title&quot; }, &quot;this is a test text&quot;);
  
  ReactDOM.render(element, document.getElementById(&quot;root&quot;));
  </code></pre>