将方法中的值放入属性数组

由夜伴歌笙发布于 2020-05-18 11:08:06

const cart = {
  contents: [],
  addItem() {

  }
};
cart.addItem("laptop");
console.log("The cart contains:", cart.contents);

如何将addItem方法中的项目放入content属性数组中？

紫涙嘫

2020-05-18 11:08:06

Use push:

const cart = {
  contents: [],
  addItem(item) {
    this.contents.push(item);
  }
};
cart.addItem("laptop");
console.log("The cart contains:", cart.contents);

If you want to pass multiple items like addItem("laptop", "phone"), use spreading:

const cart = {
  contents: [],
  addItem(...items) {
    this.contents.push(...items);
  }
};
cart.addItem("laptop", "phone");
console.log("The cart contains:", cart.contents);

yquo

2020-05-18 11:08:06

You could do like this this.contents.push(item)

const cart = {
  contents: [],
  addItem(item) {
     this.contents.push(item)
  }
};
cart.addItem("laptop");
console.log("The cart contains:", cart.contents);

夜伴歌笙

这家伙很懒，什么都没留下

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