JavaScript articles

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A complete guide to authentication in JavaScript

In this article, you'll learn how to implement a user authentication system in JavaScript. By the end of the tutorial, you'll have a REST API, a database to store user information, authentication via JSON Web Tokens, and even verification emails!

Deploying a React App to AWS Elastic Beanstalk

Learn how to deploy a React application to AWS Elastic Beanstalk with the Elastic Beanstalk CLI and GitHub Actions.

Advanced Javascript Collections: Introduction to Sets and Maps

You probably know about objects and arrays, but how often do you use sets and maps? This article explains everything you need to know to use these more specialized data types in your JavaScript applications.

What Next.js Has to Offer React Developers

Next.js is sometimes confused with React. In the last few years, it's solidified itself as one of the leading frontend frameworks. In this article, Jeffery Morhous shows off what makes Next.js important to React developers, and teaches you how to build your own highly-performant blog.

Object Oriented Programming in JavaScript

JavaScript is an Object Oriented Programming language. At least—it can be! Check out this article about how to use Object Oriented Programming concepts to structure your JavaScript code.

Comparing Babel, Sucrase, and Similar Libraries

Compilers, transpilers, oh my! Learn how Babel and friends do their thing—which is the right for your JavaScript build environment?

Writing Cleaner JavaScript with Modules

Do you want to write cleaner code? This article delves into some techniques you can use to write maintainable and easy-to-understand JavaScript.

Multithreading in JavaScript with Web Workers

JavaScript is single-threaded, but did you know that you can get multithreading with web workers? In this article, Badmus Kola explains how to use web workers to perform operations in parallel.
  • A photo of Badmus Kola By Badmus Kola
  • Sep 15, 2022

Deploying a Node.js App with AWS Elastic Beanstalk

Amazon's Elastic Beanstalk makes it easy to deploy and scale your applications with load balancing, health monitoring, and auto-scaling. In this tutorial, you'll learn how to deploy a Node JS application with AWS Elastic Beanstalk.

Everything You Need to Know About JavaScript Import Maps

Import maps are a new way for web pages to control the behavior of JavaScript imports, potentially enabling you to ditch your build system. In this article, Ayooluwa Isaiah dives deep into the specification.

Comparing React Component Libraries

Can't decide which React component library to use? In this article, Samson Omojola evaluates ten of the most popular React component libraries. Material UI is the most popular by far.

A comparison of Node.js environment managers

A version/environment manager is essential if you work with different Node.js versions—but which should you use? Ayooluwa Isaiah investigates the competing options.

Creating a GraphQL Server in Node.js

GraphQL is a solid alternative to a traditional REST API, and offering one to your users may be easier than you think. Follow along as Kevin Cunningham builds a GraphQL endpoint with Node.js and MongoDB!
  • A photo of Kevin Cunningham By Kevin Cunningham
  • Jun 9, 2022

An Introduction To AWS CloudFront Functions

CloudFront Functions allow you to deploy serverless JavaScript functions to AWS' network of edge locations to be executed as close as possible to end-users. This article will get you started.

Monorepo Javascript Projects with Yarn Workspaces and Lerna

Typically, every project that you do will have its own git repository. This approach can be cumbersome when those projects are closely tied. Monorepos promise a more convenient alternative. In this article, Saiharsha Balasubramaniam shows how to set up and manage a monorepo for a JS project using Yarn Workspaces and Lerna.
  • A photo of Saiharsha Balasubramaniam By Saiharsha Balasubramaniam
  • Jan 17, 2022

Caching in Node.js applications

Caching is a common technique for making your applications faster. It lets you avoid slow operations by reusing previous results. In this article, Ayo Isaiah walks us through the different options for caching in NodeJS applications.

A comprehensive guide to error handling In Node.js

Errors happen in every application. Devs have to decide: do you write code to handle the error? Suppress it? Notify the user? Report it to the team? In this article, Ayo Isaiah walks us through every aspect of the JavaScript error system. He'll show us how to work with errors and discuss appropriate choices for real-world scenarios.

Understanding and implementing OAuth2 In Node.js

OAuth2 is everywhere. From "Login With Facebook" buttons to back-end API authentication. But how does it work? In this article, Diogo Souza will give us a gentle introduction to the big concepts behind OAuth2, then walk us through implementing it in Node.js.

Backend JavaScript News Brief (Q3 2021)

Several security fixes were addressed. Popular topics include Microservices Authentication in Node.js, the npm registry deprecating TLS 1.0 and 1.1, and the Node v16.10.0 release.
  • Oct 1, 2021

Currency Calculations in JavaScript

When you do calculations with money, every penny needs to be accounted for. Unfortunately, JS's Number type isn't up to the task. In this article, Julio Sampaio shows us why and teaches us how to do currency calculations the right way in JavaScript.
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