Palindromes - freecodecamp algorithm challenge

script.js

function palindrome(str) {
console.log(str);
  var strLowerStripped = str.toLowerCase().replace(/[^a-zA-Z0-9]+/g,'');
 //split the string into an array
  var splitString = strLowerStripped.split("");
 //reverse the string  
  splitString.reverse();
 //join the arry back together
  var joinArray = splitString.join("");
  console.log(joinArray);
  console.log(strLowerStripped);
  if (joinArray === strLowerStripped){
    return true;
  }
  return false;
  
}




palindrome("1 eye for of 1 eye.");