JAVASCRIPT

reverse number javascript

// Function to reverse Number
function reverseNum(n) {
  let r = n.toString().split('').reverse().join('');
  return Math.sign(n) * parseInt(r);
}

// Call
reverseNum(-267);
reverseNum(31522);

// Outputs
-762
22513

how to reverse number in javascript

// how to reverse number in javascript
let number = 12345;
let reverse = parseInt(number.toString().split('').reverse().join(''));
console.log(reverse);
// Output:
// 54321

Reverse a number in JavaScript

let rev = 0;
let num = 123456;
let lastDigit;

while(num != 0){
	lastDigit = num % 10;
  rev = rev * 10 + lastDigit;
  num = Math.floor(num/10);
}

console.log("Reverse number : "+rev);

Reverse numbers from an array in javascript

const numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
const reverseNumbers = numbers.reverse();
console.log(reverseNumbers);

reverse a number in javascript

const num = 3849;

function reverseGivenInteger(num) {
    return Number(String(num).split('').reverse().join(''))
}

console.log(`Reversed integer is: ${reverseGivenInteger(num)}`)