Internally, React uses several clever techniques to minimize the number of costly DOM operations required to update the UI. For many applications, using React will lead to a fast user interface without doing much work to specifically optimize for performance. Nevertheless, there are several ways you can speed up your React application

10 React security best practices

1. Default XSS Protection with Data Binding
2. Dangerous URLs
3. Rendering HTML
4. Direct DOM Access
5. Server-side Rendering
6. Detecting Vulnerabilities in Dependencies
7. Injecting JSON State
8. Detecting Vulnerable Versions of React
9. Configuring Security Linters
10. Avoiding Dangerous Library Code

styled-components is the leading framework in CSS-in-JS libraries all over the world. It provides a simple and elegant way to implement inline styled-components in React projects.

styled-components has some cool features that many devs don’t know about. In this guide, we’ll describe some of these features and show you how you can use them to spruce up your next project.

The biggest struggle I've observed is developers who have experience with React class components and lifecycle hooks like constructor, componentDidMount, componentDidUpdate, and componentWillUnmount. You can definitely map these to function components with hooks, but that's a big mistake.

In web development practice, it is common for web apps to separate their front-end from back-end services. As such, accessing resources from the back-end requires the understanding of Cross-Origin Resource Sharing or CORS for short. It is an essential part of understanding web infrastructure for developers.

Hello everyone! In this article, let's discuss CORS, why we need it and how we can implement it. We'll also look at related concepts such as the Same-Origin Policy.

Over the past few months, I’ve moved as much code as possible away from Gatsby. While I see why people are attracted to it and its growing ecosystem, I am no longer sipping the KoolAid. Next.js, while not perfect either, provides a better abstraction layer on top of Webpack that is more than adequate for the vast majority of projects.

In this post, I am going to share my personal opinions about the two projects as they relate to making static websites1.

Designing correctly the dependencies is an important skill to architect Front-end applications. The first step to creating a good design is to identify the stable and volatile dependencies and treat them accordingly. In this post, you’re going to find out how.

Table of Contents

• 1. Stable dependencies

• 2. Volatile dependencies

  • 2.1 A bad design
  • 2.2 A better design
  • 2.3 Be aware of added complexity
  • 2.4 Injection mechanisms
• 3. Summary

Have you ever written components with props names such as “isFirstElement”, “fromAuthenticationScreen”, “v2”, “adminVersion”? I did, and I regretted it months later when I had to add a new functionality 

Get your ticket to our conference and workshops here https://www.react-europe.org/#tickets

Follow him on twitter https://twitter.com/httpJunkie

Talk topic: Building a fullstack React app with GraphQL, Express, and Couchbase - Eric Bishard aka @httpJunkie

Paul will be talking on how to work with product/management on "selling" to them that paying back technical debt and investing in developer experience can impact the monetary return from users/customers.

When you look at the results of the State of Frontend survey, one thing is certain: React dominates JavaScript framework mind share today. However, at the same time, it seems that next-generation reactive frameworks may soon rise as lean alternatives to the React ecosystem. And it all has much to do with the rising popularity of TypeScript.

Table of Contents

Principles

Let’s outline three key principles we’re striving for.

⚖️ Scalability: Development speed should be kept high as more packages adopt TypeScript. Time spent installing, compiling, and checking code should be minimized.

☮️ Ecosystem Coherence: Packages should work together. Upgrading dependencies should be pain-free.

� Standards Alignment: We want to stick with standards, such as ECMAScript, and be ready for where they might go next.

The discoveries that surprised us usually came down to cases where we weren’t sure if we could preserve these principles.

'm still a fan of CSS-in-JS, and in recent years, the CSS spec has evolved and improved a lot and modern browsers have too (unfortunately, Internet Explorer is NOT a modern browser in this or any context). Often I'd use a ThemeProvider (like those found in emotion), but turns out there aren't a whole lot of advantages to that kind of component for many use cases and there are several disadvantages.

The React 17 release is unusual because it doesn’t add any new developer-facing features. Instead, this release is primarily focused on making it easier to upgrade React itself.

In particular, React 17 is a “stepping stone” release that makes it safer to embed a tree managed by one version of React inside a tree managed by a different version of React.

It also makes it easier to embed React into apps built with other technologies.

When React Hooks were introducted in late 2018, they revolutionized the developer experience by introducing a new way to share and reuse "React-ful" logic. Even the creator of Vue aknowledged this and wanted to allow Vue users to leverage the power of this new concept in way that complements Vue's idomatic API. Today, I want to compare the result of this work in the form of the Vue 3 composition API to React hooks by implementing a sample app. We will examine if Vue's transparent reactivity based approach really is simpler than React's immutability based approach and what benefits the React team aims to get in the long term by taking a look at React Concurrent Mode.

Motivation

So why go through this process? Well, first of all, it will make your code easier to read. You will get all the code from fetch hidden behind explanatory method calls. Like backend.get.users(), that makes sense and is short.

Sure you could extract the logic into a function named getUsers() and make the fetch call in there. But then here is the next benefit: don't repeat your self. Without a good structure for your back end requests, you will definitely repeat your self. Setting authorization and other headers in multiple places, or just to see if the fetch call is ok everywhere...

You could also move this code outside into a library for use in your web apps and Node services without a hassle.

In this post I'm going to walk through how to implement global state management in a React application using the same pattern across 5 of the most popular libraries and APIs using the most modern and up-to-date versions of the libraries.

1. Recoil
2. MobX
3. XState
4. Redux (with hooks)
5. Context

We’ve spent so much effort trying to get design out of our variables — those most atomic of reusable code bits — I felt instantaneously attracted to the idea of putting design back in.

Here’s how we evolved, architected, and implemented tokens throughout design, code and collaboration.

The fact that React shuns mutation as an API for changing state and instead state updates are explicit function calls was a huge improvement for me. I can't tell you how much time I spent wondering what was causing my state to change incorrectly. My software was complected by the "ease" of state updates.

Futuristic Sci-Fi and Cyberpunk Graphical User Interface Framework for Web Apps - arwes/arwes