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Practice

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.


How to Use the var Keyword​

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

Declaring a var variable
var studentName = 'Alex';

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


Characteristics of Variables Defined with var​

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

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

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