08. Square Every Digit.md

Welcome. In this kata, you are asked to square every digit of a number and concatenate them.

For example, if we run 9119 through the function, 811181 will come out, because 92 is 81 and 12 is 1.

Note: The function accepts an integer and returns an integer

function squareDigits(num){
  let numLetter = num.toString();
  let suqreNumber = numLetter.split('').map((digit) => digit ** 2);
  return +suqreNumber.join('')
}