Why var is not working outside the scope?

Question

Check the code.I assume var is behaving like let.It is not defining the variable outside the scope/function.
https://code.sololearn.com/Wu5kwmDF2UKS/?ref=app

Answer 1

I suppose, It doesn't work, because variable not global. It is declared inside the function

Answer 2

You can use "const" or declare a variable outside of a function to fix your code, good luck:)