Learn about side effects and how to avoid them, how to wield immutablity to update objects and arrays in Redux reducers, and the easy way to update state with Immer.
Redux and React Redux explained as simply and as clearly as possible both through theory and examples. Learn about actions, reducers, store, connect, mapStateToProps, mapDispatchToProps and more!
React.memo() increases the performance of pure functional components by preventing useless re-renders. But such performance tweaks must be applied wisely.
Redux-Observable is a middleware for Redux which handles cancellation and many other asynchronous side effects by using reactive programming. … RxJS and Most.js are two libraries for reactive programming with which you can handle streams of actions in different ways. … In the following examples, Most.js will be used.
Modals, there are a thousand ways of implementing them, but the biggest challenge is to keep them simple and flexible. Let’s do that with React Hooks and Portals!
Application that will help you learn React fundamentals. Install this application locally - there's tutorial, code snippets and exercises. The main objective of this project is to help you get off the ground with React! - tyroprogrammer/learn-react-app
Everyone had something to say about React Hooks when it was introduced last month. But I didn’t see anyone say we can stop using Render Props. So I’ll say it. We can stop using Render Props.
A tutorial on how to use RxJS in React for state management. It shows how to implement a Rx.js higher-order component (hoc) that takes over the observable streams ...
I’ve seen React misunderstood by smart people more often than any other JavaScript library. React is packed with ideas that were radical at the time of its introduction. This created an air of…
Build website interactions and animations visually — without writing code. Add parallax scrolling effects, mouse based motion, and multi-step animations without learning CSS and JavaScript.
glamorous is React component styling solved with an elegant (inspired) API, small footprint (<5kb gzipped), and great performance (via glamor). It has a very similar API to styled-components and uses similar tools under the hood (glamor).
React is incredible because it allows you to build your UI using a declarative API. You tell React what you want the interface to look like, and it handles the rest. As users interact with the…
Welcome to Part 12 of this comprehensive review and summary of Cory House's Pluralsight course Building Applications with React and Redux in ES6. Cory is a Microsoft MVP in C#, founder of OutlierDeveloper.com, avid tech reader, and speaker. He believes in clean code, pragmatic development, and responsive native UIs. Also in this series: Part 1 -…
Components can be tested with snapshot testing. Tools like Jest (often combined with Enzyme) that offer this functionality take a ‘snapshot’ of what your component renders — everything from divs…
We will be building a user authentication in a single page application with Node, React, Redux and Koa combined with Passport. We will implement local authentication, where users can log in using an email and passport, and authentication with Facebook, which can be used with other social networks and OAuth providers.
In this article we will take an in-depth look at the differences and similarities between Marko and React from the perspective of the maintainers of Marko. Example • Similarities • Differences Syntax…
Two and a half hours of new beginner (free) and advanced React material are now available Egghead.io! I couldn’t be more excited to introduce you to what I can call my best work to date: Two new…
In this comprehensive tutorial, Dan Abramov - the creator of Redux - will teach you how to manage state in your React application with Redux. State management is absolutely critical in providing users with a well-crafted experience with minimal bugs. It's also one of the hardest aspects of a modern front-end application to get right. Redux provides a solid, stable and mature solution to managing state in your React application. Through a handful of small, useful patterns, Redux can transform your application from a total mess of confusing and scattered state, into a delightfully organized, easy to understand modern JavaScript powerhouse. The principles of Redux aren't new, but they are packaged and presented for you in an easy to use library that not only elevates your applications, but also improves your general understanding of building JavaScript UIs. In this course, Dan Abramov will show you the fundamentals of Redux, so that you can start using it to simplify your applications. There are some amazing community notes on this course here on Github. Once you are finished with this course be sure to check out part 2: building-react-applications-with-idiomatic-redux
This time, I chose to implement it using React, Redux and ImmutableJS. I really enjoyed the functional nature of this stack — state management is so much simpler and predictable this way.
I wrote a React component, transpiling using Babel, bundling and building using Webpack. I wanted to use it in another application via NPM. My NPM publish package needed to include component…
This is not your regular React vs Vue.js vs Angular comparison. We have enough of those from people much more involved in the subject. Let’s just say everyone has its own preference. I prefer React…
A few days ago Netflix tweeted that they'd removed client-side React.js from their landing page and they saw a 50% performance improvement. It caused a bit of a stir.
It’s been a while since I’ve been working with React — a Facebook library to build user interfaces using JavaScript — and there are a few concepts I wish I knew when I was just starting. This text is…
In early days of single-page applications, we used to hardcode a lot of stuff, and very often we ended up with a lot of chunks of code, which did not make a lot of sense outside of their page. In…
“ReactJs is a javascript library for building user interfaces” is official one liner introduction about ReactJs. The user interacts with application by clicking, hovering, pressing a key or…
In a previous post, I explained how to extract React child components to avoid using bind or arrow functions in render. But I didn’t provide a clear demo to show why this is useful. In this example…
React is slow - just like other frontend frameworks. But if you care about performance, it's fairly easy to make any React application super fast. Here is how.
This article is not going to cover what React is or why you should learn it. Instead, this is a practical introduction to the fundamentals of React.js for those who are already familiar with JavaScript and know the basics of the DOM API.
React is usually pretty fast, but it’s easy to make small mistakes that lead to performance issues. Slow component mounts, deep component trees, and unnecessary render cycles can quickly add up to an…
You should use this guide as a companion to the official Facebook documentation for getting started. While the official docs are great, the React ecosystem includes many other important projects which are outside the scope of the React docs.
Now don’t get me wrong, this doesn’t mean I can turn you into a React master instantly. But at least you’ll understand all the major concepts, if you do decide to jump in.
Writing inefficient React components can cause them to rerender too often. Peter Bengtsson looks at ways of creating and optimizing stateless components.
In today’s article we will be building a React application with passwordless authentication through Auth0. For brevity, we will use the Auth0 React Starter as the foundation for our application…
This is the second part of our full-stack tutorial series that will walk you step by step through building an instant messaging app with React and GraphQL. Last week, in the first part of this…
Rendering a list of some elements in a page is a common task for almost any web-app. In this post I would like to show how to improve performance for that case. For a test example we will create app…
I still remember the feelings when I first started learning about routing in client side applications. At the time I was just a wee lad still getting my feet wet with this whole “Single Page…
Imagine you have a form for editing a user. It’s common to create a single change handler to handle changes to all form fields. It may look something like this…
Does having a basic understanding of React Redux good enough to build an application? No, it’s definitely not. This is not how we do it!. In this blog, I have tried to connect one of the most…
Welcome to this review of the Pluralsight course "Building Applications with React and Redux in ES6" by Cory House. This is a brand new course and I am writing this review on the same day that it was published. Cory is a Microsoft MVP in C#, founder of OutlierDeveloper.com, avid tech reader, and speaker. He believes…
If you inspect the source of a React Redux app, it could be overwhelming. But there is a method to the madness and it becomes very simple once you understand what’s going on. To understand it better…
Redux is becoming the de facto way to build React apps. And there are tons of examples that show how it’s done. But React-Redux apps have too many parts like: “Reducers”, “Actions”, “Action…