Detecting when user scrolls to bottom of div with React js

Question

I have a website with different sections. I am using segment.io to track different actions on the page. How can I detect if a user has scrolled to the bottom of a div? I hav

Answer 1

Here's a solution using React Hooks and ES6:

import React, { useRef, useEffect } from 'react';

const MyListComponent = () => {
  const listInnerRef = useRef();

  const onScroll = () => {
    if (listInnerRef.current) {
      const { scrollTop, scrollHeight, clientHeight } = listInnerRef.current;
      if (scrollTop + clientHeight === scrollHeight) {
        // TO SOMETHING HERE
        console.log('Reached bottom')
      }
    }
  };

  return (
    

      
 onScroll()} ref={listInnerRef}>
        {/* List items */}
      
    
  );
};

export default List;