Cannot overwrite function from inside the function [duplicate]

Answer 1

You cannot overwrite the function's named variable inside its own declaration. NFE (Named Function Expression) name cannot be overwritten (because it is constant)

This is clear when you write in strict JS mode. Try the example below:

'use strict';

var b = function c(){
  console.log(c);
  c = 3; // c still is a function
  console.log(c);
}

b();