What are classes in JavaScript?

Short answer: Classes are blueprints for creating objects. They provide syntactic sugar over the traditional prototype-based inheritance. Example: class Person { constructor(name, age) { this.name = name;

Example code

this.age = age;
}
}
const sandeep = new Person("Sandeep", 30); console.log(sandeep.name); // Sandeep

Real-world example (ShopNest)

ShopNest’s browser cart uses modern JavaScript: fetch APIs with async/await, modules, and clear error handling.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.