Understanding Data Types in JavaScript

JavaScript is a versatile and powerful programming language widely used in web development. One of the fundamental concepts in JavaScript is data types, which define the kind of values that variables can hold. Understanding data types is crucial for writing effective and error-free code. In this blog, we will dive into the different data types in JavaScript and how to use them.

Primitive Data Types

Primitive data types are the most basic data types in JavaScript. These include:

1. Number

The Number data type represents both integer and floating-point numbers. For example:

let age = 25;  // Integer
let price = 19.99;  // Floating-point

JavaScript also supports special numeric values like:

• Infinity
• -Infinity
• NaN (Not a Number)

2. String

A String represents textual data. Strings can be enclosed in single quotes (‘ ‘), double quotes (“ “), or backticks (`) for template literals. Example:

let name = "John Doe";
let message = `Hello, ${name}!`;

3. Boolean

The boolean data type has two possible values: true or false. It's often used in conditional statemen

let isLoggedIn = true;
let hasAccess = false;

4. Undefined