Simple Representation of Redux data flow:
User interaction dispatches an action --> The reducer updates the state based on the action --> Subscribed components update the UI based on the new state.
This is a just clean example of a Redux-based application. There is only one simple component that is connected to the Redux cycle (counter). We have two buttons inside: Increment and Decrement. As you have probably already guessed — these buttons will either increase or decrease the counter value.
Now let’s figure out what objects and functions we need to build Redux from scratch: — createStore, combineReducers, connect, and Provider.
Redux has become one of the most popular libraries in front-end development since it was introduced by Dan Abramov and Andrew Clark in 2015. They designed it as the successor for Flux, with the support of some developer tools and a few more concepts embedded in it.
Flux vs Redux comparison source: enappd.com
Despite its advantages, some developers have found it rather challenging to deal with Redux due to the amount of boilerplate code introduced with it. And the complexity of the code seems to be another reason for the difficulty.
In this article, we will look at how to reduce the boilerplate code brought about by Actions and Reducers using Redux-Actions
#react-redux-boilerplate #react-redux #react #react-actions #redux
Very often, you can hear about the state in frontend applications, but what it exactly is? Let me explain.
State in frontend applications represents all the data stored in the application in a given time. It can be stored in different formats like objects or strings. Based on the state’s values, we can personalize the application, display, and hide certain elements.
To manage the state in modern frontend frameworks, we can use different libraries like Redux, MobX, or NgRx. The most common one is Redux, which is used mainly with ReactJS applications, although it’s possible to use it with Angular as well.
With Redux, the state of the application is kept in the store, and we can access the store from every component in the application. Redux consist of store, reducers, and actions.
In this article, I’d like to tell you more about the Redux library and create a simple ReactJS project, where I’ll set up a Redux step by step.
Redux is based on the flux architecture, and it supports unidirectional data flow. It means that data in the application goes through the same lifecycle over and over again, which makes everything that happens in the state more predictable.
Let’s take a look at the simple graphic, which illustrates the data’s lifecycle in the Redux application.
On the graphic above, you can see that from the UI, we trigger an action that passes the data to the reducer. Next, the reducer updates the store, which is the state of our application. The store defines the user interface.
Let’s think of the benefits which using Redux can bring to our development.
When you’re building the application, you know more or less how much data you will need to manage inside the application. In most cases, frontend applications have some functionality, and very rare they are just static websites. Commonly, we keep some user data, forms data, etc. inside the application state, and then it’s very useful to use a tool for managing the state.
The most popular solution in ReactJS applications is Redux. There are some important benefits to the popularity of this solution. Let’s take a look at them one by one.
Above I listed a few benefits of using Redux to manage the state of your frontend application. Now, I’d like to go to the practical part, where we are going to set up a Redux with ReactJS application.
Redux Toolkit is the official, opinionated, batteries-included toolset for efficient Redux development. Mark Erikson (@acmemarke), long-time Redux maintainer and avid blogger about all things web development showed us the potential of Redux in action with an awesome demo!
Some handy links you might encounter in the video:
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Redux is super simple to use. Actions are used to indicate what can be possible done to the states, reducers are used to indicate the transformation of the state, dispatch is used to execute the action and store is used to combine all together. Is it sounds like greek? let me explain in detail.
Why we need redux? can’t we use states and props? This is an additional burden.
Let me explain, If sub component has its’ own states then it is not a problem to manage them. Then what if those data is needed for the sub component two. Then we have to do **state uplifting **and pass those data to the parent component as follows and pass them to the child component as props. Then it is still manageable.
What if those data is needed for Component One and Component Two as well. Then we have to face the problem of **props drilling **as follows because we have to pass those data here and there using props and it become a burden.
Then redux come to solve this issue by separating the data from components as follows.
#redux-reducer #react-redux #redux #react