factorial formula in javascript code example

Example 1: factorial javascript

// Simple arrow function solution
var factorial = n => (n <= 0) ? 1: n * factorial(n - 1);

Example 2: javascript factorial of a number

const factorial = n => n <= 1 ? 1 : n * factorial(n - 1);

// Examples
factorial(2);   // 2
factorial(3);   // 6