// AS-IS
var oldFunc = function() {
	console.log('Old Function');
}
var oldEs = 'ES';
var oldObj = {
	sayJs : function() {
		console.log('JS');
	},
	oldFunc: oldFunc
};
oldObj[oldEs+6] = 'Wow';
oldObj.oldFunc();	// Old Function
oldObj.sayJs();		// JS
console.log(oldObj.ES6);	// Wow
 
// TO-DO
const newFunc = function() {
	console.log('New Function');
}
const newEs = 'ES';
const newObj = {
	sayJs() {			// sayJs 객체의 메서드에 함수 연결 시 콜론과 function를 붙이지 않음
		console.log('JS');
	},
	newFunc,			// newFunc: newFunc 처럼 속명명과 변수명이 동일하면 한 번만 써도 됨
	[newEs+6]: 'Wow'	// 객체의 속성명을 동적으로 생성
};
newObj.newFunc();	// New Function
newObj.sayJs();		// JS
console.log(newObj.ES6);	// Wow
 
 

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