JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://google-code-prettify.googlecode.com/svn/loader/run_prettify.js"></script>
<script src="https://google-code-prettify.googlecode.com/svn/trunk/src/prettify.js"></script>
<pre class="prettyprint"><code id="jsExample">    var user = 'public'; //Do NOT store your API Key on a script.
</code></pre>
<input type="button" value="test"/>

JavaScript

$('input[type=button]').click( function() {
    $("#jsExample").text("    var user = 'private'; //Do NOT store your API Key on a script.");
   prettyPrint();
});