Javascript 类 Getter Setter

Question

我尝试在带有 webpack 的 javascript 类中使用 getter setter

为什么.js

class why {
    set setWhy(answer) {
        this._answer = answer
    }

    get getWhy() {
        return this._answer
    }
}

export default why

index.js

import why from'./why.js'

const index = () => {
    why.setWhy = 'i dont know'
    console.log(why.getWhy)
}

但它返回未定义，为什么？

undefined result in console

Answer 1

您需要创建一个 Why 类的对象才能使上面的代码工作: WhyObject = new Why();