How to Build a Real-Time Word Counter Tool with HTML, CSS, and JavaScript
Bansidhar Kadiya |
Whether you're writing an essay, a tweet, or a blog post, keeping track of your word and character count is very important. In this tutorial, you'll build a fully functional, real-time Word Counter to... read more
How to Diagnose and Fix AI Inference Latency on Kubernetes
Gursimar Singh |
It's Thursday, around quarter past two. Your team shipped an internal assistant two weeks ago. The demo went well enough that someone in finance asked whether it could read contracts. Word spread. Tod... read more
Python Algorithmic Trading with SnapTrade, Massive, Alpaca
Beau Carnes |
We just published a comprehensive, hands-on video course on the freeCodeCamp.org YouTube channel that will teach you how to build an automated, end-to-end algorithmic trading system from scratch using... read more
How to Build a Reliable AI Assistant with the Claude API
Chidozie Managwu |
Large language models can answer questions, summarise documents, write code, and interact with external systems. But building a reliable AI application requires more than sending a prompt and displayi... read more
How to Use the Fullscreen API in JavaScript (and Keep the Screen Awake with the Wake Lock API)
Alex Oliinyk |
Sooner or later, most front-end developers hit the same request: "Can this take up the whole screen?" A slide deck, a video player, kiosk dashboard, game, drawing canvas, or timer on a classroom proje... read more
How ORMs Still Let SQL Injection Through (and How to Close the Gaps)
Hackita |
A lot of developers assume that once they're on an ORM, SQL injection stops being their problem. But it doesn't disappear. It just relocates. ORMs like Sequelize, Prisma, TypeORM, and Knex parameteriz... read more
How to Build an AI Résumé Screening Tool with Next.js, Supabase, and TypeSafe Jev
Sharvin Shah |
When we post an engineering job, we get 300 to 400 résumés in a week. Reading each one carefully takes about two minutes. That adds up to eleven hours of work for just one opening, before any intervie... read more
How to Govern AI-Generated Infrastructure with Policy as Code and OPA [Full Handbook]
Kayode Adeniyi |
Modern models generate syntactically correct code nearly 100% of the time. Veracode's 2026 report puts it plainly: "Syntax is effectively solved." That reads like a milestone, but it's the reason you... read more
Why Software Automation Needs a Layer Between Intent and Execution
Hugo Teijiz |
Software automation is good at turning instructions into actions. A pipeline can deploy a release, Terraform can provision infrastructure, a runbook can restart a service, or an agent can inspect tele... read more
How to Level Up Your Portfolio in the AI Era: From Technical Writer to Developer Educator
Casmir Onyekani |
Until recently, building a technical writing portfolio could be as simple as creating a website, adding a list of articles, describing your writing experience, and linking to your social profiles. Tha... read more