ch03_test5.js

var person={};

person.name='소녀시대';
person['age']=20;
person.add=function(a, b){
     return a +b; 
};
console.log('더하기 : ' + person.add(20, 20));
console.log('나이   : ' + person.age);

Command: node "C:/Program Files (x86)/Brackets/www/macaronics/ch03_test5.js"

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

더하기 : 40

나이 : 20

Program exited with code 0

ch03_test7.js

var person ={
    name:'소녀시대',
    age :30,
    add :function (a, b){
        return a+b;
    }
};

console.log('더하기 : ' + person.add(40, 40));

ommand: node "C:/Program Files (x86)/Brackets/www/macaronics/ch03_test7.js"

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

더하기 : 80

Program exited with code 0