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Learn JavaScript

1.1 What Is JavaScript

1.2 Why JavaScript

2.1 Variables And Data Types

2.2 Var, Let and Const

2.3 Basic Operators

2.4 Comments

3.1 Conditional Statements

3.2 Loops

4.1 Defining Functions

4.2 Function Parameters

4.3 Returning Values

4.4 Scope Of Variables

Lesson 5 - Basic Data Structures

5.1 Arrays

5.2 String

5.3 Numbers

5.4 Objects

6.1 Length

6.2 Upper Case

6.3 Lower Case

6.4 Split

6.5 Concat

7.1 Length

7.2 Pop

7.3 Push

7.4 Concat

8.1 What Are Exceptions

8.2 Handling Exceptions

8.3 Raising Exceptions

9.1 Overview

9.2 Installing and Using Packages

10.1 Reading User Input

Lesson 5 - Basic Data Structures

5.3 Numbers

Numbers in JavaScript can be integers or floating-point numbers. However, unlike other programming languages, you don't need to specify the data type like integer or float.

Declaring numbers is very easy in JavaScript:

let x = 5;
let y = 3.14;
console.log(x);
console.log(y);
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