How to execute a function after incrementing the value of a variable?

Question

JavaScript

There is a function that increases the value of a variable by 1 . You need to somehow check whether the value of the StateStnum_1 variable has increased and then execute the function: flip('hoursUp' + 1, 'hoursDown' + 1, StateStnum_1, 'Single/Up/' + 2 + '/', 'Single/Down/' + 1 + '/');

Here is the code:

while (StateStnum_1!= stnum_1) {
         StateStnum_1++;
       
       flip('hoursUp' + 1, 'hoursDown' + 1, StateStnum_1, 'Single/Up/' + 2 + '/', 'Single/Down/' + 1 + '/');
       
  if(StateStnum_1 > 9){StateStnum_1 = 0;}
  
  console.log(StateStnum_1);
  
  
  
    };

Answer 1

while (StateStnum_1 != stnum_1) {
    var oldState = StateStnum_1;
    StateStnum_1++;
    if (StateStnum_1 > oldState) {
        flip('hoursUp' + 1, 'hoursDown' + 1, StateStnum_1, 'Single/Up/' + 2 + '/', 'Single/Down/' + 1 + '/');
    }   
    if(StateStnum_1 > 9) {
        StateStnum_1 = 0;
    }
  console.log(StateStnum_1);
};

I did not check for performance, but, from how I understood what was needed, this should help

Answer 2

execute the function every n seconds

Answer 3

On the native, the idea only comes through setInterval.
on angularJs watch you can hang up and enjoy life.