What is the best way to add a debounce effect on field in react/react native?

Question

I am trying to add a debounce effect on my useEffect as of right now, as soon as value in input changes it start to call the function inside it.

useEffect(() => {
   if (inputValue.length > 0) {
       fn();
   }
}, [inputValue]);

Any suggestion how I can improve or implement a debounce effect here.

Answer 1

Here is a simple useDebounceEffect:

const useDebounceEffect = (fnc, deps, delay) => {
  const ref = useRef();

  useEffect(() => {
    clearTimeout(ref.current);
    ref.current = setTimeout(() => {
      fnc();
      clearTimeout(ref.current);
    }, delay);
  }, [...deps, fnc, delay]);
};

Make use of a ref to keep the timer id. Pass the delay as an argument.

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