Markdown code block containing a highlighted code block in markdown syntax

markdown-pre-sample.md

Nested Code Blocks

To display the proper syntax for Markdown's fenced code blocks (with or without syntax highlighting) you need to use the HTML <pre> element, like so:

HTML Syntax

<pre lang="markdown">
<!-- JavaScript Code Block (Markdown Syntax) -->
</pre>

Markdown Output

```javascript
console.log('Hello, world!');
```