Because it's local scope variable as well. So u can do whatever u want with it

Without 'use strict' this will work

Please use spoiler flag next time. Because join returns a string, it doesn't transform your array to a string. str1 is an array, not a string.

this didnt work for me, i dont know why...

Don't ask, try.

But you can understand the s.repeat(n) too. You just don't know what is happening in the background.

I don't think it would work in VS, would it?

It will still work but it is a bad practice to no declare a variable

very clean

Yhh cause everybody from beginner to experience coders can understand.