First you need to put a version of Prism in the header. I have used the default CSS from the Cloud flare CDN:

<link rel="stylesheet" href="">

Then I add the base JS file. If you need other langages you will also need to add them.

<script src=""></script>

So for example, here is how you would add markdown support:

<script src=""></script>

The result looks like this:

var person = new Person();

The above was generated using the following code, notice that I include the langauge ID which ghost uses to generate the class="language-javascript" to add to the pre and code tages

```javascriptvar person = new Person();```