useeffect render new component code example
Example 1: useeffect react
useEffect(() => {
window.addEventListener('mousemove', () => {});
// returned function will be called on component unmount
return () => {
window.removeEventListener('mousemove', () => {})
}
}, [])
Example 2: react useeffect on change props
useEffect(() => console.log('value changed!'), [props.isOpen]);