https://developer.mozilla.org/ko/docs/Web/JavaScript/Guide/Obsolete_Pages/Core_JavaScript_1.5_Guide/Creating_New_Objects/Using_a_Constructor_Function
생성자 참고 url 404 오류나네요
https://developer.mozilla.org/ko/docs/Web/JavaScript/Guide/Obsolete_Pages/Core_JavaScript_1.5_Guide/Creating_New_Objects/Using_a_Constructor_Function
생성자 참고 url 404 오류나네요