React.useState does not reload state from props

by

The argument passed to useState is the initial state much like setting state in constructor for a class component and isn’t used to update the state on re-render

If you want to update state on prop change, make use of useEffect hook

function Avatar(props) {
  const [user, setUser] = React.useState({...props.user});

  React.useEffect(() => {
      setUser(props.user);
  }, [props.user])

  return user.avatar ? 
         (<img src={user.avatar}/>)
        : (<p>Loading...</p>);
}

Working demo

More Related Contents:

  1. How to fix missing dependency warning when using useEffect React Hook
  2. Infinite loop in useEffect
  3. How to use `setState` callback on react hooks
  4. How to use callback with useState hook in react [duplicate]
  5. In useEffect, what’s the difference between providing no dependency array and an empty one?
  6. React useState cause double rendering
  7. How to use throttle or debounce with React Hook?
  8. React useReducer async data fetch
  9. Line 0: Parsing error: Cannot read property ‘map’ of undefined
  10. How to sync props to state using React hooks : setState()
  11. useNavigate() may be used only in the context of a component
  12. Testing React components that fetches data using Hooks
  13. Why React useState with functional update form is needed?
  14. React Hook “useState” is called in function “app” which is neither a React function component or a custom React Hook function
  15. React: useState or useRef?
  16. How do react hooks determine the component that they are for?
  17. Lazy initial state – What it is and how to use it?
  18. useReducer Action dispatched twice
  19. React Hooks – Modified state not reflecting immediately
  20. Attempted import error: ‘useHistory’ is not exported from ‘react-router-dom’
  21. is it possible to React.useState(() => {}) in React?
  22. React Hooks – How do I implement shouldComponentUpdate?
  23. React hook rendering an extra time
  24. How to test a react component that is dependent on useContext hook?
  25. What is the expected return of `useEffect` used for?
  26. ReactJS – prevState in the new useState React hook?
  27. Property ‘value’ does not exist on type ‘never’. when use useRef hook in mui
  28. How to create dynamic refs in functional component- Using useRef Hook
  29. Put A Warning If Page Refresh in ReactJS
  30. React – Is useState ‘s setter function able to change?

Leave a Comment