var palindrome = function(phrase) {
  var initialPhrase = phrase;
  var copyPhrase = phrase.split("").reverse().join(""); // copies the string chars into an array
  console.log("initial phrase", initialPhrase); // eg. "Hello World!"
  console.log("copy phrase", copyPhrase); // eg. "!dlroW olleH"

  return initialPhrase === copyPhrase;
};