# 객체 생성자 함수
## 객체 생성자 함수
> function 함수명 (매개변수1, 매개변수2...(무제한)){\
> this.속성명 = 새 값;\
> this.함수명 = function(){\
> //자바스크립트 실행코드\
> }\
> }\
> let 참조변수 (인스턴스 네임) = new 함수명 (); // 객체생성
>
> let 참조변수 = {속성: 새 값; 함수명: function(){.....}}
## 샘플 1 \[객체 생성자 표기법]
```javascript
function obj5(a,b)/*인자*/{
this.a = a;
this.b = b;
this.c = function(){
return a * b;
}
}
let result1 = new obj5(100,200); /*인자에 값이 들어감*/
let result2 = new obj5("자바스크립트","실행했습니다.");
document.write(result1.a);
document.write(result1.b);
document.write(result1.c());
document.write(result2.a);
document.write(result2.b);
//10020020000자바스크립트실행했습니다.
```
## 샘플 2
```javascript
function func6(num1, str1, str2){
this.youNum = num1;
this.youStr1 = str1;
this.youStr2 = str2;
this.result = function(){
//출력문
// let str = this.youNum + this.youStr1 + this.youStr2 ;
let str = "";
str += this.youNum+". ";
str += this.youStr1 + "가 ";
str += this.youStr2+"되었습니다.
";
return str;
}
}
let java = new func6(6, "함수", "실행");
document.write(java.result());
//6. 함수가 실행되었습니다.
```
## 샘플3
```javascript
function CheckWeight(name, height, weight){ /*객체 생*/
this.userName = name;
this.userHeight = height;
this.userWeight = weight
this.minWeight;
this.maxWeight;
this.getInfo = function(){
let str = "";
str += "이름: " + this.userName + ", ";
str += "키: " + this.userHeight + ", ";
str += "몸무게: " + this.userWeight + ", ";
return str;
}
this.getResult = function(){
this.minWeight = (this.userHeight - 100) * 0.9 -5; /*최소 몸무게*/
this.maxWeight = (this.userHeight - 100) * 0.9 +5; /*최대 몸무게*/
if ( this.userWeight > this.minWeight && this.userWeight <= this.maxWeight ){
return "정상 몸무게 입니다.";
} else if (this.userWeight < this.minWeight){
return"살좀 찌세요.";
} else {
return"살좀 빼세요.";
}
}
}
let hwang = new CheckWeight("웹쓰", 180, 80);
let lee = new CheckWeight("웹와이", 190, 90);
document.write(hwang.getInfo());
document.write(hwang.getResult());
//이름: 웹쓰, 키: 180, 몸무게: 80, 살좀 빼세요.
```
```markup
Document
```
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