JSFiddle - React, Tailwind, and code Playground

by Mike Rispoli

JavaScript

// Your code here.

// recursion problem eloquent js functions chap

function isEven(intToCheck) {
  function evenCheck(intToCheck){
   return intToCheck -2; 
  }
  if (intToCheck == 0) {
   	return true; 
  } else if (intToCheck == 1) {
   	return false; 
  } else if (evenCheck(intToCheck) < 0) {
     return isEven(intToCheck +2); 
  } else {
    return isEven(intToCheck-2);
  }
}

console.log(isEven(50));
// → true
console.log(isEven(75));
// → false
console.log(isEven(-1));
// → ??
console.log(isEven(-24));