Steps to implement Redux in React Application

Why we need Redux in React ?

While building a complex web application that has lots of different components, like user authentication, shopping carts, coupons, product cards, and user preferences, each of these components has its own data or more specifically “state” that can change over time, managing all such data could become difficult and messy work. Keeping track of this data at each and every individual component can become difficult....

Why Redux is used for state management?

Redux is used for managing states in JavaScript applications because it provides a centralized way or a predictable way for managing application state. By maintaining the entire application state in a single store and ensuring a strict unidirectional flow makes it easier to know and track how the data changes over time. This approach also reduces complexity and improves scalability which becomes beneficial especially in case of handling large scale applications....

Flow of Redux state management:

State Initialization: Initially define an initial state for the application. The would include different states like user authentication state, data fetched from APIs or UI related content state.Dispatching Actions: When something happens in the application built, like user clicking a button or the data received from an API, at that point of time we dispatch an action. An action is a plain JavaScript object that describes about what happened, it must have a ‘type’ property which indicates the type of the action getting performed.Reducers Processing Actions: Actions are then sent to reducers. Reducers are pure functions that take the current state and the action to be performed as an input and return the new state based on that action. Reducers basically specifies how the state should change based on different actions.State Update: The Redux store then calls the root reducer, passing the current state and the action. The root reducer then redirects to the individual reducer that is responsible for handling the state. Each reducer then returns a new slice of state which is later combined into a single updated state object.State Subscription: Components of the application can also subscribe to the Redux store i.e. when the state changes then redux notifies the corresponding components for re-rendering in order to reflect the updated state in the UI.Optional Middleware: Redux also has an option to apply middleware layer, which are functions that intercept actions before they reach reducers. Middleware can be used for different uses according to one’s need like logging or routing....

Example of Redux store in React

However, redux can be used with different frameworks and libraries but still it is most popular to use it along with React applications for state management....

Steps to implement Redux in React Application:

Step 1: Open VSCode at the desired location, then in the terminal or Git Bash use ‘npx create-react-app reactredux’ in order to ensure that the latest version of the react app gets installed without any global installation....

Approach to Implement Redux for State Management:

Inside components directory, making 3 directories namely displayText (for displaying the UI), InputText (for managing the input field), and a Navbar (optional). Apart from components directory making other 4 directories such as store, action, reducer for redux state management and asserts (optional) for image storage....

Folder Structure:

Project Structure...