객체(Object) 기초

let = yong hee = {
firstName : 'yong hee'
lastName  : 'kim'
}

객체(Object) : yong hee

속성 : firstName : 'yong hee'
속성 : lastName : 'kim'

키(key) : firstName
키(key) : lastName

값(value) : 'yong hee'
값(value) : 'kim'