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Recap - Factorial

Part of the Fundamentals section of Coddy's JavaScript journey — lesson 42 of 77.

Challenge

Beginner

Factorial is a mathematical operation. Factorial of n is the product of all positive integers less than or equal to n. For example:

Factorial of 3 is 6, which can be calculated as 1 * 2 * 3
Factorial of 6 is 720, which can be calculated as 1 * 2 * 3 * 4 * 5 * 6
Factorial of 2 is 2, which can be calculated as 1 * 2

Write a program that receives one input (given), an integer, calculates the factorial of the input and prints it.

For example, for input 5, the output should be 120 because 1 * 2 * 3 * 4 * 5 = 120.

Try it yourself

let n = parseInt(inp); // Don't change this line

All lessons in Fundamentals

1Introduction

The Language Hello World!Comments Code Structure

4Operators Part 2

Logical Operators Part 1 Logical Operators Part 2 Recap - Simple Logic Logical Operators Part 3 Type Coercion

7Bill Split Calculator

Welcome Message Calculating The Tip And Total

Project lesson

Splitting The Bill

Project lesson

Formatted Output

Project lesson

10FizzBuzz with a Twist

Game Overview The FizzBuzz Function

Project lesson

Looping The Numbers

Project lesson

Adding The Twist

Project lesson

13Grocery List Tracker

Project Overview Add Item

Project lesson

Project lesson

Project lesson

2Variables

Numbers String Boolean Naming Conventions Empty Variables Recap - Initialize Variables Constants

5Decision Making

If Statement If - Else Recap - Simple Calculator Nested If - Else Switch Statement

8Loops

For Loop While Loop Break ContinueRecap - FactorialDo While Loop Nested Loop

11Arrays Part 1

Declaring an Array Accessing Array Elements Modifying Arrays Array Methods Part 1 Array Methods Part 2 Recap - Array Processor

14Final Challenges

Number Pyramid Double The Odds What To Buy