Question concerning Compare Scopes of the var and let Keywords

JavaScript
1

The instruction states that this will return (3) rather than (2) because of the global ‘i’ variable. I don’t see where unless it’s referring to the previous example where ‘i’ DID end up being 3.
Won’t the loop stop at the return point, leaving i=2?

Thanks for any help.

var printNumTwo;
for (var i = 0; i < 3; i++) {
  if (i === 2) {
    printNumTwo = function() {
      return i;
    };
  }
}
console.log(printNumTwo());
2

i isn’t a global variable. It’s function scoped.

When you declare a variable with the var keyword, it is declared globally, or locally if declared inside a function.

The loop isn’t returning at i=2 because that return statement is part of a function definition, not a block of code being run in the loop body.

That one variable i is function scoped, and it gets increased to 3 before the loop finishes, so that’s the value of i the function printNumTwo has to use.