React's useThrottle

Explore the useThrottle hook to optimize your React applications by moderating the frequency of function executions, perfect for handling rapid user actions like scrolling or resizing.

🚀 React’s useThrottle: Finding the Middle Ground in a Speedy World!

In the bustling city of React components, managing speed is crucial. Welcome to useThrottle, the traffic light that ensures smooth and steady function execution.

What’s Throttling?

Picture this: You’re in a fast car, but you don’t want to go too fast. Throttling is like having a speed limit for your functions. It ensures they don’t run amok and call themselves more often than necessary.

useThrottle Hook:

Here’s the magic wand that throttles any function you have. It’s ideal for scenarios where you need to regulate the execution frequency, like handling scroll events or window resizing.

import { useState, useEffect, useRef } from "react";

export const useThrottle = (callback, limit = 1000) => {
  const [throttled, setThrottled] = useState(false);

  const callFunction = () => {
    if (!throttled) {
      setTimeout(() => setThrottled(false), limit);

  return callFunction;

Example Time:

Let’s apply useThrottle to a window resize listener. Our hook will ensure that the resize function is called at most once every second, preventing performance issues during rapid resizing.

import React, { useState, useEffect } from "react";
import { useThrottle } from "./useThrottle";

const ResizeComponent = () => {
  const [windowSize, setWindowSize] = useState(window.innerWidth);
  const updateSize = useThrottle(() => setWindowSize(window.innerWidth), 1000);

  useEffect(() => {
    window.addEventListener("resize", updateSize);
    return () => window.removeEventListener("resize", updateSize);
  }, []);

  return <p>Window width: {windowSize}</p>;

Fun Fact:

Did you know that throttle controls in aircraft are also called ‘power levers’? Just like useThrottle, they help pilots maintain the right speed!

Joke of the Day:

Why don’t JavaScript functions listen to music while running? They might get throttled and miss the beat!

That’s useThrottle for you - maintaining a balanced pace in your React apps. It’s all about not going too fast or too slow, but just right! 🚦🚗💨