To create a syntax-highlighting code with JavaScript, use the prettify library. Add the following in your code to add the library for syntax highlighting −
<script src="https://cdn.rawgit.com/google/code-prettify/master/loader/run_prettify.js"></script>
To use it, add the following to your <pre> tag −
<pre class="prettyprint"> Code comes here </pre>