How can I implement throttling in my React application?

How can I implement throttling in my React application?

You can implement throttling in React using libraries like Lodash or by creating a custom throttle function. Would you like an example?

Yes, please provide an example using Lodash.

First, install Lodash with npm install lodash. Then, you can use the throttle function like this:

import { throttle } from 'lodash';

const handleScroll = throttle(() => {
  console.log('Scroll event triggered!');
}, 1000);

useEffect(() => {
  window.addEventListener('scroll', handleScroll);
  return () => window.removeEventListener('scroll', handleScroll);
}, []);

This will limit the scroll event handler to be called at most once every second.

What if I want to implement it without a library?

You can create a custom throttle function like this:

function throttle(func, limit) {
  let lastFunc;
  let lastRan;

  return function() {
    const context = this;
    const args = arguments;
    if (!lastRan) {
      func.apply(context, args);
      lastRan = Date.now();
    } else {
      clearTimeout(lastFunc);
      lastFunc = setTimeout(function() {
        if ((Date.now() - lastRan) >= limit) {
          func.apply(context, args);
          lastRan = Date.now();
        }
      }, limit - (Date.now() - lastRan));
    }
  };
}

You can then use this function similarly to the Lodash example.