React useRef Examples

📹 Live topics

• Understanding about react hook (synchronization instead of lifeycle)
• What is useRef?
• Why we need useRef?
  • persist value on every render (mutable state)
  • want to store value without notifying react to rerender
• Use cases of useRef?
  • store DOM to access methods like input focus
  • store handler or callback

Examples

• Email subscribe form
• Previous state
• Interval hook
• Event listener