useRef Hook

• diff between ref and state variables
  • they are similar in being objects that hold value
  • ref objects persist across render; something to hold on to when you need
  • state variables trigger rerenders
• good times to use refs:
  • managing focus or media
  • trigger animations (best for imperative)
  • integrating with DOM libraries
• useEffect is the proper way to update a ref

Source -> Refs and the Dom