Display a ‘loading’ message while a time consuming function is executed in Flask

Question

I’m still relatively new to Flask, and a bit of a web noob in general, but I’ve had some good results so far. Right now I’ve got a form in which users enter a query, which i

Answer 1

I found the purely CSS-dependent loader very useful. It does not depend on external resources:

https://www.w3schools.com/howto/howto_css_loader.asp