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                // 1. 아래는 하드코딩된 리터럴 객체이다.
// name, email을 파라메터로 받아서 객체를 생성하도록 생성자 함수를 사용하시오.
// 만일 name, email 파라메터가 값이 넘어오지 않는 경우 'Tom', ''의 기본값으로 초기화 하시오.
let person = { name: 'Tom', num: 2 };

// function Person(name, email) {
// = name ? name : 'Tom';
// = email ? email : ''
// }

function Person(name = 'Tom', email = '') { = name; = email;

let person1 = new Person();

// 2-1  여기서 사용된 this 는 무엇인가?

// 2-2. 만일 위 Person함수 맨 끝에 return 1; 을 추가하고, 다시 위 문장을 실행하면 출력결과는 무엇인가?
//      1이 리턴되는가? 안된다면 이유는 무엇인가?