Author Chidi Orji

October 15, 2020 — In this tutorial, Chidi Orji is going to show you how to use the Web Worker API to manage time-consuming and UI-blocking tasks in a JavaScript app by building a sample web app that leverages Web Workers. Finally, we’ll end the article by transferring everything to a React application. If you need more insights into this topic, Chidi has included a number of links in the “Further Resources” section to help you get up to speed. Read more…

July 3, 2020 — Testing gives confidence in written code. In the context of this article, ‘testing’ means ‘automated testing’. Without automated testing, it is significantly harder to ensure the quality of a web application of significant complexity. Fails caused by automated testing may lead to more bugs in production. In this article, Chidi Orji is going to show you how React developers can quickly start testing their app with the React Testing Library (RTL). Read more…

June 29, 2020 — In this tutorial, Chidi Orji will show you how to work with Firebase push notifications in the backend and frontend. We’ll set up the notifications system with an Express back-end server. Afterwards, you’ll listen for the notifications in a React front-end app. You will implement the backend first, then move on to the frontend. In that way, you can use whichever section appeals more to you. So let’s get started. Read more…

June 16, 2020 — In this article, we’re going to learn how to use Immer to write reducers. When working with React, we maintain a lot of state. To make updates to our state, we need to write a lot of reducers. Manually writing reducers results in bloated code where we have to touch almost every part of our state. This is tedious and error-prone. In this article, Chidi Orjil going to see how Immer brings more simplicity to the process of writing state reducers. Read more…

June 1, 2020 — In this article, Chidi Orji will explore the concept of error boundaries in a React application. You’ll work through an example app to see how we can use error boundaries to deliver a better app experience. Finally, you’ll integrate Sentry into our error boundary for realtime error reporting. The only prerequisite is that you have some familiarity with React class components. Let’s dig in! Read more…

April 8, 2020 — In this article, Chidi Orji will create a set of API endpoints using Express from scratch in ES6 syntax, and cover some development best practices. Find out how all the pieces work together as you create a small project using Continuous Integration and Test-Driven Development before deploying to Heroku. Read more…

March 16, 2020 — HTML is getting better at providing nice APIs for implementing cool features. In this tutorial, Chidi Orji is going to show you how to use the HTML Intersection Observer API to implement infinite scrolling and image lazy loading in a React functional component. In the process, we’ll learn how to use some of React’s hooks and how to create Custom Hooks. Let’s get started! Read more…

February 19, 2020 — In this tutorial, Chidi Orji will show you how to build a React drag-and-drop component for file and image uploads. In the process, we’ll learn about the HTML drag-and-drop API. We will also learn how to use the useReducer hook for managing state in a React functional component. Read more…