How do you use useContext in React hooks?

Dispatching context in both class and functional components is the same . The difference is in the way context is consumed. To use data passed from a parent component via context , you use context.

In React, it is troublesome to pass props, states, or stores down to or up to multiple nested components. The react-redux has been used by front-end developers for a long time to make global state management much easier.

When do you need context? The main idea of using the context is to allow your components to access some global data and re-render when that global data is changed . Context solves the props drilling problem: when you have to pass down props from parents to children.2 Eyl 2021

Syntax: const authContext = useContext(initialValue); The useContext accepts the value provided by React. createContext and then re-render the component whenever its value changes but you can still optimize its performance by using memorization.1 Kas 2020