The freeCodeCamp community has published more than 10,000 tutorials on our publication over the years. But lately we've focused on creating even longer resources for learning math, programming, and computer science. This is why we've created freeCode...

User authentication is extremely important in the context of web development. The way users log in affects their overall experience and engagement with an application. It also affects how they initially perceive it. Authentication techniques are cont...

TypeScript's new using operator can help us manage our resources better. Let's explore how it works and why it's useful in development!

Working smart, not hard, has become more important than ever. As developers, we frequently find...

Node.js is a JavaScript runtime environment, meaning it has everything you need to execute a program written in JavaScript. Though quite…

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In programming, an array is a data structure that contains a collection of elements. Arrays are very useful because you can store, access, and manipulate multiple elements in a single array. In this handbook, you'll learn how to work with arrays in J...

Test functions using the new Node.js native test runner, and compare its performance to testing frameworks like Jest and Mocha.

Compare the two React frameworks, Gatsby and Next.js, based on use cases that range from building static sites to large, multi-user sites.

Node.js, Bun, and Deno: we compare these three popular JavaScript runtimes so you can determine which is the right one for your project.

As web developers, we all know that practice makes perfect. But when it comes to practice, it's easy to get stuck in a programming rut. But how do you come up with new ideas to build? Sooner or later, you will find yourself running out of features to...

NestJS is a great framework. It's versatile, rock solid, and thoroughly documented. You can build...

Are you ready to take your web development skills to the next level and learn a bit about how platforms like Google Drive work under the hood? We just published a course on the freeCodeCamp.org YouTube channel that will teach you how to build a Goog...

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In this video I look at Zod a schema validator and use it for form validation. Then I see how it will work with Veelidate, and finally we connect it to an AppSync with…

SQL is everywhere these days. Whether you're learning backend development, data engineering, DevOps, or data science, SQL is a skill you'll want in your toolbelt. This a free and open text-based handbook. If you want to get started, just scroll down ...

In Linux, process automation relies heavily on shell scripting. This involves creating a file containing a series of commands that can be executed together. In this article, we'll start with the basics of bash scripting which includes variables, comm...

Learn how to use the Event Bus design pattern for communication among components

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Learn how to safeguard your Node.js applications against malicious users and ensure the uninterrupted, seamless operation of your app.