javascript - Why does a named IIFE result in a ReferenceError outiside of it?

Question

Why did I get “ReferenceError: Person is not defined” for the following code?

(function Person() {
  console.log('Hi');
}());
console.log(Person);

Since function Person is run, it is first created. However, I cannot explain why it is not then recognized. My only thought is that IIFE ignores the name they are given.

Answer 1

Named function expressions only create a variable matching their name within their own scope.

(function Person() {
  // Person is in scope here
  console.log(Person);
}());
// Person is out of scope here
console.log(Person);