JSFiddle - React, Tailwind, and code Playground

HTML

<pre>
  <code class="codeIt"> 
    <h4>Heading &amp;&amp; qty &gt;  </h4>
    <h5>Heading 5</h5>
    <h6>Heading 6</h6>
  </code>
</pre>

JavaScript

$('.codeIt').each(function(i){
  $(this).text($(this).html());
});