JAVASCRIPT

on window resize react

import React, { useLayoutEffect, useState } from 'react';

function useWindowSize() {
  const [size, setSize] = useState([0, 0]);
  useLayoutEffect(() => {
    function updateSize() {
      setSize([window.innerWidth, window.innerHeight]);
    }
    window.addEventListener('resize', updateSize);
    updateSize();
    return () => window.removeEventListener('resize', updateSize);
  }, []);
  return size;
}

function ShowWindowDimensions(props) {
  const [width, height] = useWindowSize();
  return <span>Window size: {width} x {height}</span>;
}

window size change react

const [dimensions, setDimensions] = useState({
    height: typeof window !== 'undefined' && window.innerHeight,
    width: typeof window !== 'undefined' && window.innerWidth,
  });
useEffect(() => {
    const handleResize = () => {
      setDimensions({
        height: window.innerHeight,
        width: window.innerWidth,
      });
    };
    window.addEventListener('resize', handleResize);
  }, []);

return {
      {console.log(`Rendered at ${dimensions.width} x ${dimensions.height}`)}
}