[quote="merefield, post:6, topic:361009"]
You could try using an iFrame if you can host the JavaScript elsewhere.
[/quote]

This is probably the most accessible answer if you want content *in the post* as opposed to, for example, a banner at the top.

For example, I picked one of the front page items off CodePen (since it's in our `allowed_iframes`) and embedded it below:

<iframe width="100%" height="300" scrolling="no" title="/Hack ＿ - SVG Filter [Editable]" src="https://codepen.io/Pedro-Ondiviela/embed/yyLWGaN?default-tab=result" frameborder="no" loading="lazy" allowtransparency="true" allowfullscreen="true">
  See the Pen <a href="https://codepen.io/Pedro-Ondiviela/pen/yyLWGaN">
  /Hack ＿ - SVG Filter [Editable]</a> by Pedro Ondiviela (<a href="https://codepen.io/Pedro-Ondiviela">@Pedro-Ondiviela</a>)
  on <a href="https://codepen.io">CodePen</a>.
</iframe>

<small>[source](https://meta.discourse.org/raw/361009/7)</small>