Introducing the React Context
Explore the React context to understand how it enables sharing of data like user info and themes across components. Learn to create, provide, and consume context values, manage nested providers, and handle default context values when no provider is found.
React context data structure
The context is modeled with a ReactContext data type holding a _currentValue value, and it also contains a component provider.
React context data structure
Creating and sharing context
We can create a context with the createContext function. For instance, if we want to share a piece of user information, we can create a UserContext and hold a defaultValue:
const UserContext = createContext(defaultValue)export default UserContext
The created context can be shared via a JavaScript export statement, and this way, when any other file or component needs it, it can be imported.
The context allows us ...