The variable "x" changes over time, how to see its new value without reloading the page?

Question

Flask

There are several Python functions that return values ​​that change over time. You need to display these values ​​in real time on the site. What are the ways to implement this in Python + Flask? I asked in other places, advise JavaScript, tell me, please, in which direction to dig.

Answer 1

Towards ajax with long-pooling, or towards sockets, if it's not too much.