function Person(first, last) { return { first: first, last: last, fullName: function() { return this.first + ' ' + this.last; }, fullNameReversed: function() { return this.last + ', ' + this.first; } }; } p = Person("James", "Bond"); var fullName = p.fullName; fullName();

Esperaba Output = 'James Bond' pero obtuve 'indefinido indefinido'