The parseInt() method takes an argument. If a argument passed is a string and a number i.e.parseInt("56"); It will return integer 56. And if a argument passed is a string and not a number i.e. parseInt("Some text"); It will return NaN. Which means Not a number.
It is great that you solved the challenge, but instead of posting your full working solution, it is best to stay focused on answering the original poster’s question(s) and help guide them with hints and suggestions to solve their own issues with the challenge.
We are trying to cut back on the number of spoiler solutions found on the forum and instead focus on helping other campers with their questions and definitely not posting full working solutions.