230512 질문 답변 준비

[ ES5 ]

function BbangFrame(zearyo1, zearyo2){
this.base = zearyo1;
this.main = zearyo2;
}

var creambbang = new BbangFrame('밀가루', '크림')
console.log(creambbang)

var strawberrybbang = new BbangFrame('쌀가루','딸기')
console.log(strawberrybbang)

[ ES6 ]

class BbangFrame2{
constructor(zearyo1,zearyo2){
this.base = zearyo1;
this.main = zearyo2;
}
}

let patbbang = new BbangFrame2('밀가루','팥x2')
console.log(patbbang)


// var , let, const : 변수 선언 인데
// let, const 는 es6 에서 나온거다.
// 근데 왜 es5(2012) 는 알아야 하냐?
// 최근 코드만 만진다는 보장이 없다... 
// 

 

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[게터 세터]

let myname = {
name: "땡땡",
lastname: "김",


get fullName(){
return `${this.lastname} ${this.name}`;
},

set fullName(value){
[this.lastname, this.name] =  value.split(" ");
}

};

get fullName(){
return `${this.lastname} ${this.name}`;
}
,


set fullName(value){
[this.lastname, this.name] =  value.split(" ");
}

---

[은닉 예시]

[ typescript ] 
private 
- 클래스 내부, 자식 클래스 내부, 클래스 인스턴스 모두 접근 가능
public
- 클래스 내부에서만 접근 가능

class typetest {
public a: string;
private b: string;

constructor(x:string, y:string){
this.a = x;
this.b = b;
}
}

const typetest = new typetest('하이','바이');

console.log(typetest.a); // 참조 가능
console.log(typetest.b); // 참조 불가능


[javascript] #

class javatest {
#a = 230512;
}

const javatests = new javatest();
console.log(javatests.#a);

 

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