You can give Mithril.js [0] a go. It's lightweight and has a couple additional goodies such as routing and xhr inbuilt. It has very good documentation as well.

You can also enable JSX [1] if you prefer that to hyperscript.

A site with more code examples and up to date [2]

[0] https://mithril.js.org/

[1] https://mithril.js.org/jsx.html

[2] https://mithril-by-examples.js.org/