Summary  
Destructuring extracts values from objects and arrays into variables, and the spread operator copies or merges data structures.  

General domain of usage  
Backend development



Destructuring allows you to extract values from objects and arrays into variables.

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

const { name, age } = user;
```

Now you can use `name` and `age` directly instead of accessing them through the object.

You can also use destructuring with arrays:

```javascript
const numbers = [10, 20];

const [first, second] = numbers;
```

The spread operator (`...`) is used to copy or merge data.

```javascript
const user = { name: "John" };

const updatedUser = {
  ...user,
  age: 25
};
```

This creates a new object with all existing data plus new values.

Destructuring and spread are commonly used when working with data, especially in backend code where objects are passed and modified frequently.


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.

Destructuring and Spread