As the title says I wrote the package streamlit-javascript which lets you execute javascript snippets on the client side and sends you back the result of it. It was my solution for this issue here
Nice 
I’ll have to give it a try!
Feel free to add it to the Streamlit Components - Community Tracker so we don’t lose sight of it 
wow this tracker is getting bigger and bigger
Have a nice day,
Fanilo 
This is nice! @thunderbug1 Did you build this for a specific use case?
Yes, this was my usecase: Get Active Directory authentification data