How to think in blueprints and objects — and write code that scales. For a while, I wrote JavaScript the only way I knew: functions and variables scattered across a file, doing things step by step. It worked for small scripts, but the moment a project got bigger — more features, more data, more logic — the code turned into spaghetti. Functions everywhere, no clear structure, and I kept asking myself: "Where does this piece of logic belong ?" That's when I learned about Object-Oriented Programming (OOP) , and it changed how I think about code. Instead of organizing by what the code does , I started organizing by what the code represents . Users, products, tasks — each one becomes a self-contained unit with its own data and behavior. In the ChaiCode Web Dev Cohort 2026, OOP was the bridge between "writing code that works" and "writing code that's organized." Let me show you how it works in JavaScript. What Does Object-Oriented Programming Mean?…