Why does this always return false no matter which numbers I plug into the function

const compareGuesses = (humanGuess, computerGuess, secretNumber) => {

  let humanGuessDifference = secretNumber - humanGuess
  let computerGuessDifference = secretNumber - computerGuess

  if (computerGuessDifference > humanGuessDifference) {
    var humanWinner = true
  } else {
    var humanWinner = false

  }
  return humanWinner
};

console.log(compareGuesses(1, 10, 2))

Answer

It doesn’t.

const compareGuesses = (humanGuess, computerGuess, secretNumber) => {
  const humanGuessDifference = secretNumber - humanGuess
  const computerGuessDifference = secretNumber - computerGuess
  if (computerGuessDifference > humanGuessDifference) {
    return true;
  } else {
    return false;
  }
};
console.log(compareGuesses(10, 1, 2))

But to properly compare the difference, you should keep in mind that subtraction may result in a negative number – in which case you may get something like if (1 > -8) – the magnitude of the difference is larger, but if it’s negative, it’ll still fulfill the >. Use Math.abs to take the absolute value of the differences.

const compareGuesses = (humanGuess, computerGuess, secretNumber) => {
  const humanGuessDifference = secretNumber - humanGuess
  const computerGuessDifference = secretNumber - computerGuess
  return Math.abs(humanGuessDifference) < Math.abs(computerGuessDifference);
};
console.log('first is closer:', compareGuesses(10, 1, 2))
console.log('first is closer:', compareGuesses(1, 10, 2))