If you’re getting started with trying to understand Redux, it can get a bit daunting especially for beginners. There’s a number of blogs out there on the topic, but they all fall short as they fail to cover the topic comprehensively. In this one, we’ve tried to compile all you need to know to get started with Redux and how begin using it to manage your React apps.
If you’re more comfortable with Video tutorials, you can go through this one by Learn Coding to get a grasp of the basics before reading on.
So, what is Redux actually?
Redux has a large ecosystem of add-ons that ultimately makes it suitable to be used together with React website templates as well as other view libraries. On top of all that, React Redux can easily provide a great and dynamic developer experience, along with many amazing benefits.
Since the state of the application is changed, the view through which the current state is presented with changes, and it eventually allows users to see the new to-do item in their view. However, if the state of an application doesn’t behave as expected, then it’s possibly the right time to debug the app.
As a matter of fact, real-world applications are very complex, and there are certain factors that could actually make the app debugging process eccentric and unconventional. Some of these factors include framework design flaws, bad coding habits, less time invested in writing unit tests, etc.
How does the Redux framework work?
The Redux framework can further be broken down into the following:
1. Store – This component is meant for managing the state of the application. In fact, there is a ‘dispatch’ method within the Redux framework that is used to dispatch an action. In a React Redux web app, you can obtain the states with the help of the command ‘store.getState ()’.
Basics of React Redux
React Redux has espoused a handful of limitations and restraints from the Flux architecture. It includes actions that are responsible for encapsulating the required information for the action state update. It also incorporates a Redux Store to save the current state of the application. However, the Redux Store is a singleton entity and React Redux does not include multiple storing, like in the Flux architecture.
In addition to Actions and Redux Store, React Redux also comprises multiple reducers. These reducers basically pick up the information/data from actions and reduce it to a new state. So, after the state of the Redux Store is changed, the apps view act on the state by subscribing to the Redux Store.
Redux combines two major terms: Reducer and Flux. Redux doesn’t allow the app’s state to live in the view. Being a part of the unidirectional data flow, Redux frameworks are connected on two ends.
One end is responsible for triggering an action whereas the other end receives the state from the store. This is the main reason why the web app’s view updates according to the app’s state changes. However, in this case, the app’s view is React, and Redux is used as a standalone or in connection with other libraries.
Executing any action in React Redux is called dispatching. React Redux allows the users to dispatch an action to change the current state in the Redux Store. However, an action can only be dispatched when the current state of JS apps need to be changed or altered.
In addition to this, the dispatching of an action is often triggered in the view, and it’s as simple as clicking on the HTML button. As a matter of fact, the payload in the Redux action is not compulsory, which means that the users can define actions only according to the action type.
Reducers are the next essential part in the React Redux chain of unidirectional data flow. A reducer is basically a pure function that produces the same output every time in case of the same input.
React Redux includes no multiple states, and it’s the Redux Store that holds one global state object. The Redux Store offers ways to trigger the state updates alongside reducing the previous states and actions to new states.
Simple Styling for React Redux Components
● After defining the CSS classes, you can consider defining the style in the Stories component within the ‘src/components/stories.css’ file.
● Finally, you can define styles for story components in the ‘src/components/story.css’ file.
Integrating React Redux within a User interface
Using or integrating React Redux templates with any user-interface layer requires a certain number of steps.
Step 1 – Create a Redux Store.
Step 2 – Subscribe to updates
Step 3 – Get the current store state
Step 4 – Extract the data that is required by the UI and update the UI with the data.
Step 5 – Render the UI with its initial state
Step 6 – Dispatch the Redux actions by responding to various UI inputs.
It’s important for you to know that an efficient UI binding library like React Redux can easily handle the store interaction logic, which allows you to skip the complicated tasks of writing hefty code segments by yourself.
Why do developers prefer React Redux?
Here are the major benefits that React Redux framework offers to its users:
1. Predictable State Updates – This feature of the React Redux makes it a lot easier and straightforward for users to understand the data flow that works in a web application.
2. Pure Reducer Functions – React Redux uses pure reducer functions that enable useful features like ‘time travel debugging’ alongside simplifying the test logics.
3. State Centralization – React Redux centralizes the state of web apps that makes it convenient to implement certain essential things like logging data changes, persisting data between web page refreshes, etc.
Why should you use Redux?
● Encourages Good React Architecture – React components are pure functions that allow the users and web app developers to write hefty code segments in a single function. It’s usually better to split these React functions into smaller functions because it eventually allows the React Redux to handle specific tasks alongside simplifying them and making them easy to understand. You can consider splitting the components on the basis of responsibilities. You can also opt for container components that can be of great help in collecting as well as managing some valuable data alongside controlling the presentational components for simple UI display.
● Helps to generate container wrapper elements – The connect function of React Redux is extremely helpful in generating container wrapper components that are responsible for handling the store interaction process. This way, you can consider using React Redux to collect valuable data, display interactive and distinctive UI, and control your UI components to perform several essential tasks. In addition to all this, the connect abstract of React Redux eventually makes the UI components easily testable and more reusable.
This is where React Redux comes into play and improves the performance by skipping the unnecessary re-renders after the change of data. It is essential for you to learn that React Redux implements several performance optimizations on an internal basis, and it eventually results in proper re-rendering of UI components. Therefore, you can easily connect multiple components to your React component tree in order to make sure that each linked component extracts the specific data sections from the store state. It will not only facilitate less re-rendering of components but also optimize their performance in the best possible manner.
The way forward: The best online tutorials to master Redux from scratch.
Comprehensive tutorial by Dan Abramov, the creator of the Redux framework. This course will show you the fundamentals of the framework, it’s split up into several easy to digest lectures with comprehensive video walkthroughs guided by Dan himself.
Learn Redux (Free)
If you’re already fairly comfortable with Redux as a framework, this tutorial will take you through React.js, Redux and React Router. It covers everything from setting up a Redux Store to creating your own Redux application.
Full Stack Redux Tutorial (Free)
A deep dive into all things Redux. This comprehensive tutorial will guide users through building full stack Redux application from scratch. It will take you through the entire process of constructing a Node+ Redux backend and React + Redux frontend for a consumer facing app.