Browser-stored list! VERSION 2.0!

No libraries this time!

Earlier, I said

so I did, using primitives and flattening and json-of-list.

Check it out here!!!!!

(the actual fun code is inside, so you should look inside the project for the full effect)

I looked inside the blocks, and it looks very complicated, so complicated that i don't know how it works, nice.

Welcome to the forums! The set block just checks if the browser key exists, and if not, creates a JSON-ified list and stores it, and if it does exist, just sets a JSON-ified list to those browser keys.