I’m very excited to share with you my new Streamlit tutorial, and it’s about building your first Streamlit Component! You will implement a custom slider which only reruns your app on mouse release, without React prerequisites! There’s much more info there, lots of diagrams of Streamlit internals, things you can and can’t do with Components, a bit of React discussion…a lot to digest!
Find the tutorial on the following link : https://streamlit-components-tutorial.netlify.app/
By the end of this course; you should have the necessary workflow to produce your very own Streamlit components 
hope you’ll like it and feel free to share!
Fanilo
I’ve never used javascript or react but I’m excited to give it a go