New Twitch api redirect uri confusion!

Hello everyone, i have been going through the new api information and i think i have most of it figured out as far as what to do i just am stuck on getting my secret, it wants me to provide a redirect uri and im not really sure what i should put since im doing through codepen and from what i have read people say to send it to a seperate page to do the authorization, and that makes it seem more like actual apps people are making through servers but to call my endpoint i need that authorization… i feel like im about to start moving in the wrong direction with this and was wondering if im overthinking it and can use my projects url or i need to have a seperate page to make it work

If i remember right you can enter http://localhost for redirect URI

thank you ill try that!