Introducing the React Context
Learn how React contexts are created using createContext and can be shared across components.
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 ...