javascript - 类里面的字典？

Question

我试图在我的 javascript 类中创建字典/对象并通过 nodejs 运行它，但我收到此错误:

params.js:4
costPerHr = {

          ^

SyntaxError: Unexpected token =

我的对象看起来像这样:

module.exports = class Params {
  constructor() {}

  costPerHr = {
    internal: 100,
    shore: 50,
  };

  hoursPerMonth = 160;

  swhwMultiplier = {
    2: 280 / hoursPerMonth,
    5: 470 / hoursPerMonth,
  };
};

Answer 1

要在类中设置属性，您必须在构造函数中设置它们:

module.exports = class Params {
    constructor() {
        this.costPerHr = {
            internal: 100,
            shore: 50,
        };

        this.hoursPerMonth = 160;

        this.swhwMultiplier = {
            2: 280 / this.hoursPerMonth,
            5: 470 / this.hoursPerMonth,
        };
    }
};