How to make a function run in the background?

Question

JavaScript

Hello. I want the function to validate the form in real time. But I would not like to set all if parameters in the global scope. How can a function be made to run in the background?

Answer 1

There is no such concept. Either call on a timer, or, more correctly, call on data change events in the form.

Answer 2

So track the keyUp event on the form inputs and run the validation function when it occurs.