JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<div class="post">
Lots of content here
  <div id="heading">
    <p>Hello</p>
  </div>
Another content here
</div>

<div id="real-content"></div>

CSS

.post {
  display:none;
}

JavaScript

var content = $('#heading').html();

if (content != '') {
		$('#real-content').html(content);
}