수업소개
이 수업은 불필요하게 어렵습니다. 동일한 역할을 하면서도 훨씬 이해하기 쉬운 class 상속 수업을 보실 것을 권해봅니다. 물론 보셔도 됩니다. ㅎㅎ
강의1
강의2
코드
constructor-inheritance.js (변경사항)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | function Person(name, first, second){ this.name = name; this.first = first; this.second = second;}Person.prototype.sum = function(){ return this.first + this.second;}function PersonPlus(name, first, second, third){ Person.call(this, name,first,second); this.third = third;}PersonPlus.prototype.avg = function(){ return (this.first+this.second+this.thrid)/3;}var kim = new PersonPlus('kim', 10, 20, 30);console.log("kim.sum()", kim.sum());console.log("kim.avg()", kim.avg()); |
강의3
코드
constructor-inheritance.js (변경사항)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | function Person(name, first, second){ this.name = name; this.first = first; this.second = second;}Person.prototype.sum = function(){ return this.first + this.second;}function PersonPlus(name, first, second, third){ Person.call(this, name,first,second); this.third = third;}// PersonPlus.prototype.__proto__ = Person.prototype;PersonPlus.prototype = Object.create(Person.prototype)PersonPlus.prototype.avg = function(){ return (this.first+this.second+this.third)/3;}var kim = new PersonPlus('kim', 10, 20, 30);console.log("kim.sum()", kim.sum());console.log("kim.avg()", kim.avg()); |
강의4
constructor 속성의 의미와 용도를 살펴봅니다.
강의5
코드
constructor-inheritance.js (변경사항)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | function Person(name, first, second){ this.name = name; this.first = first; this.second = second;}Person.prototype.sum = function(){ return this.first + this.second;}function PersonPlus(name, first, second, third){ Person.call(this, name,first,second); this.third = third;}// PersonPlus.prototype.__proto__ = Person.prototype;PersonPlus.prototype = Object.create(Person.prototype);PersonPlus.prototype.constructor = PersonPlus;PersonPlus.prototype.avg = function(){ return (this.first+this.second+this.third)/3;}var kim = new PersonPlus('kim', 10, 20, 30);console.log("kim.sum()", kim.sum());console.log("kim.avg()", kim.avg());console.log('kim.constructor', kim.constructor); |
