Check if a Number is Even with less division

iseven.js

/* function isEven(num) { if num is a really large number this will require A LOT of recursive division
  return num % 2 === 0; // infinite module divisions
}*/

function isEven(num) { 
  num = parseInt(num.toString().slice(-1)); // the rightmost digit of any even number is also even so just check that
  return num % 2 === 0; 
}