I rather like https://lit.dev/ https://lit.dev/ for web components so far. For the reactivity stuff, you might want to read https://frontendmasters.com/blog/va

I rather like https://lit.dev/ https://lit.dev/ for web components so far. For the reactivity stuff, you might want to read https://frontendmasters.com/blog/vanilla-javascript-reactivity/ https://frontendmasters.com/blog/vanilla-javascript-reactivi... - it shows a bunch of no-library-required patterns that, while in a number of cases I'd much rather use a library myself, all seems at least -basically- reasonable to me and will probably be far more comprehensible to you than whatever I'd reach for, and frameworks are always much more pleasant to approach after you've already done a bunch of stuff by banging rocks together first.