React for Real

What You Learned

You can use Redux instead of the built-in setState if you need a lot of flexibility or if you need to pass the same data to many far-apart components. With Redux, deeply nested or far-apart elements can affect the application state without passing props down many layers of elements.

Redux places the state in a single object called the store. You generate state changes by creating action objects and sending them to the store. React Redux wraps plain presentational components into higher-order components that talk to the store. You can use it both on custom components and to connect existing components to the store.

Redux is a toolkit. You’ve seen one of the most common ways to use it with React. Middleware can modify Redux behavior ...