Sumit Saha's Articles & Writing
Read Sumit Saha's latest writing, including freeCodeCamp contributions, Medium articles, and other published insights on software, startups, and teaching.
freeCodeCamp Contributions
How to Set Up WebAuthn in Node.js for Passwordless Biometric Login
JWT auth feels clean until a stolen token still looks valid to your server. That's the real problem: a bearer token proves possession of a token, but it doesn't prove po...
The AI Coding Loop: How to Guide AI With Rules and Tests
Building great software isn't about perfect prompts, it's about a disciplined process. In this guide, I'll share my workflow for shipping secure code: defining clear goa...
How Execution Context Works in JavaScript – A Handbook for Devs
Execution Context is one of the most fundamental yet most misunderstood concepts in JavaScript. It defines how JavaScript code is evaluated and executed, and it plays a ...
How Closures Work in JavaScript: A Handbook for Developers
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 nea...
Learn How to Use Git and GitHub – A Beginner-Friendly Handbook
In this handbook, you’re going to dive into something really exciting: Git and GitHub. To start, let’s clear one thing up: Git and GitHub are not the same thing. In shor...
Medium Articles
Stop Writing API Routes: Next.js Server Actions for Mutations
Topic: nextjsnextjs-server-actionreact-server-component
A guide to Prototype in JavaScript
Topic: javascriptprototype-chain
The Power of Asynchronous Programming in JavaScript
Topic: asynchronous-programmingjavascript
Everything you need to know about pipe and compose functions in JavaScript
Topic: javascriptfunctional-programming
Node.js back-end debugging process
Topic: debuggingnodejs
Other Published Articles
CODING DREAMS INTO REALITY: Guidelines for SAAS product development
The Financial Express




