freeCodeCamp

2025 has been a super productive year for the global freeCodeCamp community. As we start our 12th year as a community, we’re firing on all cylinders, pushing forward more steadily than ever. This year we made substantial improvements to the new Full ...... read more

Every app that handles user accounts needs a way to confirm who’s who. That’s what authentication is for, making sure the person using an app is the person they claim to be. But doing this securely is harder than it sounds. Traditional methods often ...... read more

Flexbox is a powerful CSS feature that lets you build user interfaces that fit any screen size. freeCodeCamp just published a Flexbox for beginners course where you'll learn the concepts and code syntax by building your own website navigation bar. If...... read more

Developers are smart, wonderful people, and they’re some of the most logical thinkers you’ll ever meet. But we’re pretty terrible at naming things 😂 Like, what in the world – out of every other possible name, they decided to name a database after a ...... read more

It may seem like everyone is a vibe coder these days, and prompting seemed like it would become the new coding. But is this AI-generated code really deployable? Bragging on social media about a clever script is one thing, but pushing a vibe coded app...... read more

If you're learning JavaScript, you've probably heard the term "closure" at some point. In many developers' experience, just hearing this word can trigger anxiety. In nearly 17 years of programming experience, I've noticed that closures are one of the...... read more

React simplifies building user interfaces with hooks like useState for managing dynamic values. But it's common to overuse useState. This often leads to duplicated data and unnecessary complexity. For instance, you might store a full name in state wh...... read more

Python development looks simple from the outside. But managing real projects is rarely easy. You need to install packages, update them, avoid version conflicts, create virtual environments, and prepare your project for distribution. Many beginners th...... read more

When you click on most backend development tutorials, they often teach you what to do, not how to think.That’s why many developers only realize their mistakes after they start building. So, how does one actually think like a backend developer? Before...... read more

Nowadays, computers can comprehend and produce human-like language thanks to Natural Language Processing. And this opens up numerous opportunities for you as a developer. This guide will teach you how to create NLP projects from scratch. It includes ...... read more