ch03_test18.js

var person1={name: '소녀시대', age:20};
var person2={name:'걸스데이', age:21};

function Person(name, age){
    this.name =name;
    this.age=age;
}

Person.prototype.walk =function(speed){
    console.log(speed + " km 속도로 걸어갑니다.")  ;
};

var person3 = new Person('소녀시대', 20);
var person4 = new Person('걸스데이', 22);

person3.walk(10);

Command: node "C:/Program Files (x86)/Brackets/www/macaronics/ch03_test18.js"

Working directory: C:/Program Files (x86)/Brackets/www/macaronics/

10 km 속도로 걸어갑니다.

Program exited with code 0