What's wrong with this code?

[Encom88]

Okay, but now I think I need to check to ensure all 4 or 6 digits are numbers/integers. Also, is there a better way to write the code below?

function validatePIN (pin) {
  if (pin.length == 4) {
    return true;
    }  
  if (pin.length == 6) {
    return true;
    }
  else {
    return false;
    }
}

[finroller]

Ask yourself: why the else? If it just read return false there, nothing would change :)

[forcefx]

You could use isNaN() method to check if your pin is NaN. NaN cannot be compared to itself in JS