In given options, find the react hook, which reads a value from a stored state and subscribes to updates? A useSelector() B useDispatch() C UseState() D Both B and C
Question
In given options, find the react hook, which reads a value from a stored state and subscribes to updates? A useSelector() B useDispatch() C UseState() D Both B and C
Solution
The correct answer is A. useSelector(). This hook allows you to extract data from the Redux store state, using a selector function. It subscribes to the Redux store, and every time an action is dispatched, the selector is re-run to see if the new state causes the selector's result to change.
Similar Questions
In given options, find the react hook, which reads a value from a stored state and subscribes to updates? A useSelector() B useDispatch() C UseState() D Both B and C
Match the commonly used React hooks and their applications. Hook Application1. useState a. Perform side effects on updates2. useEffect b. Returns memorized values3. useContext c. Used to track state4. useMemo d. Manage state globally
Which of the following hooks is most appropriate for tracking complex application state in React?1 pointuseEffectuseReduceruseState
Which React hook is used to handle side effects in a functional component?AuseState()BuseContext()CuseReducer()DuseEffect()
How do you invoke setDone only when component changes, using hooks?function MyComponent(props) { const [done, setDone] = useState(false); return <h1>Done: {done}</h1>; }Note: Try to explore useCallback function on your own.AuseEffect(() => { setDone(true); });BuseEffect(() => { setDone(true); }, []);CuseCallback(() => { setDone(true); }, [setDone]);DuseEffect(() => { setDone(true); }, [done, setDone]);
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.