Nice, the basics again, very good to see. But then:
I know what you’re thinking, I forgot the most important snippet of them all for writing HTML:
<div id="root"></div> <script src="bundle.js"></script>
Lol.
-> Ok, thanx, now I do feel like I'm missing an inside joke.
It's a typical pattern in, say react, to have just this scaffolding in the HTML and let some frond end framework to build the UI.