Summary  
This chapter introduces objects as data structures for grouping related information into key-value pairs and shows how to access, update, and add properties.  

General domain of usage  
Backend development


Objects are used to store related data together.

Instead of using separate variables, you group information into a single structure.

```javascript
const user = {
  name: "John",
  age: 25,
  isAdmin: false
};
```

Each value inside an object is stored as a key-value pair.

You can access data using the key:


const user = {
  name: "John",
  age: 25,
  isAdmin: false
};

console.log(user.name);

const user = {
  name: "John",
  age: 25,
  isAdmin: false
};

user.name = "Peter"

console.log(user.name);

const user = {
  name: "John",
  age: 25,
  isAdmin: false
};

user.email = "john@example.com";

console.log(JSON.stringify(user));



Objects are widely used in backend development because they represent real data, such as users, products, or orders.


Learn the core concepts of JavaScript needed for backend development, including variables, data structures, functions, and asynchronous code. Practice working with real data and understand how JavaScript behaves outside the browser. Build a strong foundation before moving on to Node.js and server-side development.

Working with Objects