An object is an unordered set of name/value pairs. JSON 데이터를 추가, 삭제하는 방법 1. 추가 obj.key_name = value; 2. 삭제 delete obj.key_name; 3. 예시 let person = { name : "오도원", age : 24, job : 'student' }; console.log('>>>>> person'); console.log(person); console.log(">>>>> add gender"); person.gender = "male"; console.log(person); console.log(">>>>> delete job"); delete person.job console.log(person);