Destructuring and Spread

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

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:

const numbers = [10, 20];

const [first, second] = numbers;

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

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.