How to keep the data up to date?

Question

JavaScript

There is data that is constantly updated on the server and written to a file (every 100 ms), you need to transfer it to the client side, so far I did it through the setInterval function (which should check them at the same interval), checking this JSON file, But I'm not sure how correct this is to solve the problem.
Server side

code: Client code:

I'm still green on this topic, so don't get mad if the question is simple.

Answer 1

Look towards sockets