Not bad, not bad :)

Try to use a whitespace, it's easy!

LoL) Math is a power :)

Thank you! The best example what should be done.

unary plus (+).
Changing from String to Number.

Who can I sue over this situation?

Assignments define variables globally if you don't use const, let or var. Var is defined only in the innermost function where defined, and let and const are only defined in the block where defined.

console.log('damn '.repeat(3));

i - is not defined...
So, it doesn't work :)