javascript factorial
function factorial(n) {
if (n < 0) return;
if (n < 2) return 1;
return n * factorial(n - 1);
}javascript factorial
function factorial(n) {
if (n < 0) return;
if (n < 2) return 1;
return n * factorial(n - 1);
}factorial in javascript
// program to find the factorial of a number
// take input from the user
const number = parseInt(prompt('Enter a positive integer: '));
// checking if number is negative
if (number < 0) {
console.log('Error! Factorial for negative number does not exist.');
}
// if number is 0
else if (number === 0) {
console.log(`The factorial of ${number} is 1.`);
}
// if number is positive
else {
let fact = 1;
for (i = 1; i <= number; i++) {
fact *= i;
}
console.log(`The factorial of ${number} is ${fact}.`);
}
//output
Enter a positive integer: 5
The factorial of 5 is 120.Copyright © 2021 Codeinu
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