//comment

Changed the console.log to comment
correction to isNaN

had a typo in the isNaN (lower case on the second n) made the change
because kept getting an error when running.
prompt added

Added a prompt for when visitor doesn’t enter a number into the prompt,
asks visitor to enter a number again.
Changes to comments

Changed the console.log to only comments in the code.
Changed to comment

changed another console.log to only a comment.