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 Execution Context Works in JavaScript – A Handbook for Devs

How Execution Context Works in JavaScript – A Handbook for Devs

 How Closures Work in JavaScript: A Handbook for Developers

How Closures Work in JavaScript: A Handbook for Developers

 Learn How to Use Git and GitHub – A Beginner-Friendly Handbook

Learn How to Use Git and GitHub – A Beginner-Friendly Handbook

 How to Implement Multi-Threading in Node.js With Worker Threads [Full Handbook]

How to Implement Multi-Threading in Node.js With Worker Threads [Full Handbook]

 The JSON Web Token Handbook: Learn to Use JWTs for Web Authentication

The JSON Web Token Handbook: Learn to Use JWTs for Web Authentication

Medium Articles

Stop Writing API Routes: Next.js Server Actions for Mutations

Topic: nextjsnextjs-server-actionreact-server-component

February 2026

A guide to Prototype in JavaScript

Topic: javascriptprototype-chain

April 2023

The Power of Asynchronous Programming in JavaScript

Topic: asynchronous-programmingjavascript

March 2023
March 2023

Other Published Articles

A comprehensive guide to developing successful SAAS products, covering essential steps from ideation to launch.