how to reverse a number using function in js code example

Example 1: 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

Example 2: reverse int js

function reverseInt(n) {
  let reversed = n.toString().split("").reverse().join("");
  //from string to integer
  reversed = parseInt(reversed);

  if (n < 0) {
    return reversed * -1;
  }

  return reversed;
}