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// Variable declaration
var studentName = 'TechMates';
var studentAge = 20;

// Using variables
console.log('Student\'s name: ' + studentName); // Student's name: TechMates
console.log('Student\'s age: ' + studentAge); // Student's age: 20

// Reassigning variables
studentName = 'InnovatorsHub';
studentAge = 25;

// Output variables
console.log('Updated student\'s name: ' + studentName); // Updated student's name: InnovatorsHub
console.log('Updated student\'s age: ' + studentAge); // Updated student's age: 25

# Var Keyword for Declaring Variables

`var` is the keyword used in JavaScript for declaring variables.

> A `keyword` in programming languages is a word that carries special meaning and is used for defining variables or functions.

A variable is a named storage space that can store data for later reference or modification.

`var` provides a space to store a specific value and retrieve it when necessary.

<br />

## How to Use the var Keyword

To declare a variable, use the `var` keyword, specify the variable name, and assign a value.

```javascript title="Declaring a var variable"
var studentName = 'Alex';
```

Here, `studentName` is the name of the variable, and "Alex" is the value stored in that variable.

<br />

## Characteristics of Variables Defined with var

A `var` variable, once declared, can be **reassigned** to hold a different value.

```javascript title="Variable reassignment"
var number = 10;
number = 20; // The value of variable number is changed to 20.
```

Variables declared with the `var` keyword can be reassigned to a different value.

### Variables declared with the `var` keyword cannot be reassigned.

Variable Declaration Keyword - var

Var Keyword for Declaring Variables

How to Use the var Keyword

Characteristics of Variables Defined with var

Variables declared with the var keyword cannot be reassigned.

Variables declared with the `var` keyword cannot be reassigned.