Caleb  Towne

Caleb Towne

1619494020

Implementing Redux from Scratch

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: — createStorecombineReducersconnect, and Provider.

#redux

What is GEEK

Buddha Community

Implementing Redux from Scratch

Reduce Redux Boilerplate Code with Redux-Actions

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 is a fancy name for observer pattern further modified to support React. Both Flux and Redux consist of similar concepts like Store, Actions (events in the application). In other words, Flux is a simple JavaScript object but with some middleware like redux-thunk. It can be a function or a promise for Redux. However, Redux is a single source of truth with concepts like immutability, which improve performance. It is one of the main reasons for Redux to dominate in State Management.

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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

Felicita  Kunde

Felicita Kunde

1589786704

Redux Tutorial - Learn Redux from Scratch

If you are interested in redux, watch this video now!

Youtube channel: Programming with Mosh - https://www.youtube.com/watch?v=poQXNp9ItL4

#redux #redux tutorial

Terry  Tremblay

Terry Tremblay

1599736380

How to implement Redux Saga with ReactJS and Redux?

Intro to Redux setup tutorial

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.

Let’s start!

How does Redux work?

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.

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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.

Benefits of using Redux

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.

  • predictable state — The state in Redux is predictable because reducer functions are pure; therefore, if we pass the same state and the same action, it needs to return the same result. Redux state is also immutable; it can’t be changed or modified.
  • easy to maintain — Considering that it’s predictable and very strict about the structure of the Redux application, anyone who knows Redux will understand it and work with it easily.
  • easy to debug — Redux allows us to log the behavior using available developer tools, makes debugging easier.
  • developer tools available — Redux has amazing developer tools, that can be used in the browser to see what’s happens in the backend.
  • server-side rendering — Redux supports server-side rendering by allowing to manage initial rendering. Redux sends the state of the application to the server with a response to the server’s request.

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.

#javascript #react #redux-saga #frontend #redux

Jesus  Moran

Jesus Moran

1622824320

Modern Redux with Redux Toolkit

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:
➡️ https://blog.isquaredsoftware.com/2021/01/context-redux-differences/
➡️ https://blog.isquaredsoftware.com/2018/11/react-redux-history-implementation/
➡️ https://github.com/immerjs/immer

  • 00:00 - Intro
  • 00:25 - Meet Mark Erikson
  • 02:57 - Is Redux dead?
  • 06:25 - Redux is a jack of all trades
  • 09:00 - What makes the Modern Redux tick? v7.1, Hooks
  • 10:43 - useSelector hook
  • 11:31 - useDispatch
  • 13:23 - What is Redux ToolKit & what does it do?
  • 15:30 - configureStore
  • 17:00 - Immer
  • 18:25 - createReducer API
  • 19:19 - createAction
  • 19:57 - createSlice
  • 23:27 - createSelector
  • 23:40 - createAsyncThunk
  • 24:40 - createEntityAdapter
  • 26:43 - Redux Toolkit safety check
  • 28:20 - Redux Toolkit: RTK Query
  • 32:57 - App Setup
  • 34:05 - App Usage
  • 35:05 - Redux Templates for Create-React-App
  • 35:40 - Coding demo time! - Redux + TypeScrypt + Vite App Example
  • 47:28 - RTK Query Overview
  • 50:05 - New “Redux Essential” Tutorial
  • 51:35 - Outro

React All-Day is a long-format stream of fun and learning with React experts, and live coding from familiar names and faces from around the React world!

Eight awesome guests covered eight exciting topics from sessions on testing, data management, full-stack frameworks to programming concepts, and more.

React Wednesdays is a weekly chat show with the best and brightest from the React world. Join us live every Wednesdays to hang out and ask questions. Learn more about the show and upcoming episodes at https://www.telerik.com/react-wednesdays.

#redux #redux

Let’s use redux in react

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.

What is redux?

Redux is a state management library which can be used in React and it can be also used in Angular, Vue and even vanilla JavaScript. Apart from that Context API can be used as an alternative for Redux.

Why we need redux? can’t we use states and props? This is an additional burden.

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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.

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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.

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Then redux come to solve this issue by separating the data from components as follows.

#redux-reducer #react-redux #redux #react