목록extends (1)

sohyeon kim

[JS] class 상속 extends

class Person { constructor(name, first, second, third) { this.name = name; this.first = first; this.second = second; this.third = third; } sum() { return "prototype : " + (this.first + this.second + this.third); } } class PersonPlus extends Person { avg() { return (this.first + this.second + this.third) / 3; } } var kim = new PersonPlus("kim", 10, 20, 30); console.log("kim.sum()", kim.sum()); //..
JavaScript 2023. 9. 16. 15:11
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