The template I used to create the site basics included Alpine.js that according to their own words is:

Alpine is a rugged, minimal tool for composing behavior directly in your markup. Think of it like jQuery for the modern web. Plop in a script tag and get going.

Let's try it with a simple button counter example

and that as code is surprisingly simple:

<div x-data="{count: 0}">
    <button x-on:click="count = count + 1">Add</button>
    <div x-text="count"></div>
</div>

Yes, it feels positively jQuery like. From reading a tutorial to this in 15 minutes.

Oh, and one more thing to my to-do list: fix syntax highlighting.