How to fade in a div on page load?

Question

I'm using jQuery. I need a div to fade in when the page loads.

<div id=monster></div>

How can I achieve this?

Answer 1

See working demo

$('#monster').hide().fadeIn('slow');

#monster{
  width: 200px;
  height: 100px;
  border: 1px solid #0095ff;
  border-radius: 5px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id=monster>
  <pre>
    This is demo text.
    This is demo text.
    This is demo text.
    This is demo text.
  </pre>
</div>