componentdidunmount hook code example

Example 1: react hooks componentdidmount

// import useEffect from 'react';

useEffect(() => {
	// your code here
}, []);

Example 2: componentwillunmount hooks

useEffect(() => {
  window.addEventListener('mousemove', () => {});

  // returned function will be called on component unmount 
  return () => {
    window.removeEventListener('mousemove', () => {})
  }
}, [])