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Creating a Simple Global State Example

In this lesson, we'll apply the concepts learned in the previous lesson to create a simple global state example using React Context.

Setup Context Provider​

  • Create a new file called AppContext.js.
  • Import React and create a new context using React.createContext().
  • Create a context provider component that wraps your entire application and provides the global state and update functions.

Define Global State​

  • Decide on the data you want to store in the global state. For example, a simple todo list could have an array of todos and functions to add and remove todos.

Accessing Global State and Actions​

  • In components that need access to the global state or actions, import the AppContext and use the useContext hook to access the state and functions.
  • Update components to use the global state instead of local state for managing the data.

Testing the Todo App​

  • Test the todo application by adding and removing todos. Verify that the global state is updated correctly and that changes are reflected in all components that use the context.

Cleaning Up​

  • Discuss how to clean up the context and remove any unnecessary data from the global state when it's no longer needed.

By the end of this lesson, you'll have a simple todo application that demonstrates how to manage global state using React Context. You'll also have a solid foundation for more complex state management in larger React projects.

Congratulations! You have completed both lessons in Section 8 ("Managing Global State"). In the next section, we will apply the concepts learned so far to build a real-world Todo App in React. Happy coding!