Eventually you will come across the concept of a JavaScript Closure. I want to give you a step by step walkthrough on how to implement a JavaScript Closure. Along the way, you will find out yourself why it makes sense to implement certain things with JavaScript Closures. The whole source code can be found on GitHub . If you want to code along the…
After all my teachings about React, be it online for a larger audience or on-site for companies transitioning to web development and React, I always come to the conclusion that React is all about JavaScript. Newcomers to React but also myself see it as an advantage , because you carry your JavaScript knowledge for a longer time around compared to…
I started out with JavaScript -- and web development in general -- when everything felt brittle. Developing entire applications with jQuery felt just wrong, the JavaScript APIs (e.g. DOM API) weren't mature enough, the lack of supportive CSS made aligning HTML without hacks impossible, and in general, there was no tooling to ship qualitative web…
Not long ago, most people argued against a framework like React, Angular or Vue for your personal website. Since then, tools on top of these frameworks -- like Gatsby.js for React.js -- emerged to make static website development effortless. So if there is no actual demand, why does a static website generator like Gatsby.js do so well ? A few…
In this tutorial I want to walk you through setting up ESLint for React. You should go through the previous tutorials in order to learn about the basic setup for Webpack and ESLint though. It will also tell you about all the benefits that come with the code style improvements which ESLint is giving your projects. Webpack and Babel for React ESLint…
In this tutorial, you will learn how to use Web Components, alias Custom Elements, in React . If you want to get started to build your own Web Components before, check out this tutorial: Web Components Tutorial . Otherwise, we will install an external Web Component in this tutorial to use it in React. You will learn how to pass props as…
This tutorial teaches you how to build your first Web Components and how to use them in your applications. Before we get started, let's take a moment to learn more about Web Components in general: In recent years, Web Components, also called Custom Elements , have become a standard API for several browsers which allow developers to implement…
Since React Hooks have been released, function components can use state and side effects. There are two hooks that are used for modern state management in React: useState and useReducer. This tutorial goes step by step through a useState example in React to get you started with this React Hook for state management. Simple State in React In the…
React uses synthetic events to handle events from button, input and form elements. A synthetic event is a shell around the native DOM event with additional information for React. Sometimes you have to use event.preventDefault(); in your application. The list component example is taken from this tutorial about state management in React which…
Basically a React application is just a bunch of components in a component tree. There is one root component which kicks of the rendering for all the other components below. Commonly these components are function components in modern React applications. But they can be class components as well. However, not all of these components are only used…
