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// Define a student object.
let student = {
  name: 'CodeBuddy',
  age: 20,
};

// Print the values stored in the student object.
console.log('Student Name: ' + student.name); // Student Name: CodeBuddy
console.log('Student Age: ' + student.age); // Student Age: 20

// Change the values in the student object.
student.age = 25;
console.log('Updated Student Age: ' + student.age); // Updated Student Age: 25

# Object

An object is a collection of data represented as `key-value` pairs.

Here, the key is a string, and the value can be various data types (primitives, objects, functions, etc.).

 

## Creating an object

In JavaScript, an object is created using curly braces `{ }`.

You can represent your wallet as an object like this:

```javascript title="Creating a Wallet Object"
let wallet = {
 cash: 100,
 card: 'Visa',
 driverLicense: true,
};
```

`cash`, `card`, and `driverLicense` are properties of the object, and `100`, `'Visa'`, `true` are the values of these properties.

Properties and values are connected with a colon (`:`), and each property is separated by a comma (`,`).

 

## Accessing information from objects

There are two ways to retrieve information from an object.

 

### Using the dot (`.`) notation

This is the most common method used to access the properties of an object.

```javascript title="Accessing Object Information with Dot Notation"
let myMoney = wallet.cash; // 100
```

 

#### Using square brackets (`[]`) and keys

This method is useful when the key is given as a variable or contains spaces or special characters.

```javascript title="Accessing Object Information with Square Brackets"
let myCard = wallet['card']; // 'Visa'
```

 

## Modifying and adding information to objects

To modify or add information to an object, you can use both dot (`.`) notation and square brackets (`[]`).

```javascript title="Modifying and Adding Information to Objects"
// Adding a new property
wallet['picture'] = 'family';

// Modifying an existing property's value
wallet.cash = 200;
```

To access a property's value, type the object's name followed by a dot (.) and the property name. Do not use quotation marks for the property name.

### What is the most appropriate option to fill in the blank?

Object

Creating an object

Accessing information from objects

Using the dot (.) notation

Using square brackets ([]) and keys

Modifying and adding information to objects

What is the most appropriate option to fill in the blank?

Using the dot (`.`) notation

Using square brackets (`[]`) and keys