Random Advice Generator App using TypeScript

First time working with TypeScript and API. Honestly, prefer JavaScript over TypeScript, will there ever be a time I might prefer TypeScript over JavaScript? I don't see it. Also, DA HAIL ARE APIs? I watched like fifty tutorials on them to try and understand how to fetch the data and use it on the html. HOW ON EARTH DID IT ALWAYS GIVE ME undefined AS THE TYPE! When I finally got it, it wasn't even perfect! How long until I get used to using API and are they worth learning? I hope so.