JavaScript

Learn how to build validated React forms with controlled inputs, real-time feedback, reusable validation logic, accessible error messages, and submission handling.

Learn the React fundamentals developers actually use, including components, JSX, props, state, events, lists, forms, Hooks, API integration, and reusable UI patterns.

Learn how npm manages JavaScript project dependencies, scripts, versions, and lockfiles. Build a practical Node.js project and understand package.json, npm install, npm scripts, devDependencies, and package-lock.json.

Already have a Node.js API and wondering whether it can run without a traditional server? Learn how to move a small API endpoint to AWS Lambda, expose it through API Gateway, handle environment variables, structure the handler, and avoid common serverless mistakes.

Learn how to build secure direct-to-S3 file uploads using presigned URLs. This practical tutorial shows how your backend can authorize an upload while the browser sends the file directly to Amazon S3.

Learn how to organize a JavaScript project with a clean folder structure, reusable modules, separated responsibilities, consistent naming, and practical patterns that make projects easier to maintain and scale