Question

我对Javascript非常陌生，并且使用D＆D概念在基础上进行了一些练习，因为我可以很容易地将它们概念化。在这个过程中，我在玩对象，数组和方法。卡住的地方是如何保存添加到playerOne的“ coin”中的“ Gold”，然后在运行下面的“ getTotalGold”功能时反映出来。我想我可能会缺少一些基本的知识，或者可能只是因为我还很新，所以还没有学到一些东西。任何帮助表示赞赏！

const playerOne = {
  name: 'Zolda',
  class: 'Wizard',
  maxHp: 90,
  currentHp: 85,
  armorClass: 16,
  atkBonus: 7,
  coin: [
    {
      type: 'Gold',
      amount: 895,
    },
    {
      type: 'Platinum',
      amount: 132,
    },
    {
      type: 'Silver',
      amount: 6457,
    },
    {
      type: 'Copper',
      amount: 35456,
    },
  ],
  items: [],
  addItem(description, amount) {
    this.items.push({
      description,
      amount,
    });
  },
};

//Adding gold to the object array above
function addGold(newGold) {
  let currentGold = playerOne.coin[0].amount;
  currentGold += newGold;
  return currentGold;
}

//converting the other coin values and adding them together in "Gold" for a //estimate of the total value
function getTotalGold() {
  const baseGold = playerOne.coin[0].amount;
  const platToGold = playerOne.coin[1].amount * 10;
  const silverToGold = Math.floor(playerOne.coin[2].amount / 10);
  const copperToGold = Math.floor(playerOne.coin[3].amount / 100);

  const totalGold = (
    baseGold +
    platToGold +
    silverToGold +
    copperToGold
  ).toFixed(0);
  return `${playerOne.name} has about ${totalGold} gold pieces in total.`;
}

console.log(addGold(500));
console.log(getTotalGold());

Answer 1

您需要将添加的金分配回给对象-仅将变量名称重新分配给新数字不会更改对象的属性：

function addGold(newGold) {
  let currentGold = playerOne.coin[0].amount;
  currentGold += newGold;
  return currentGold;
}

应该是

function addGold(newGold) {
  playerOne.coin[0].amount += newGold;
  return playerOne.coin[0].amount;
}

const playerOne = {
  name: 'Zolda',
  class: 'Wizard',
  maxHp: 90,
  currentHp: 85,
  armorClass: 16,
  atkBonus: 7,
  coin: [
    {
      type: 'Gold',
      amount: 895,
    },
    {
      type: 'Platinum',
      amount: 132,
    },
    {
      type: 'Silver',
      amount: 6457,
    },
    {
      type: 'Copper',
      amount: 35456,
    },
  ],
  items: [],
  addItem(description, amount) {
    this.items.push({
      description,
      amount,
    });
  },
};

//Adding gold to the object array above
function addGold(newGold) {
  playerOne.coin[0].amount += newGold;
  return playerOne.coin[0].amount;
}

//converting the other coin values and adding them together in "Gold" for a //estimate of the total value
function getTotalGold() {
  const baseGold = playerOne.coin[0].amount;
  const platToGold = playerOne.coin[1].amount * 10;
  const silverToGold = Math.floor(playerOne.coin[2].amount / 10);
  const copperToGold = Math.floor(playerOne.coin[3].amount / 100);

  const totalGold = (
    baseGold +
    platToGold +
    silverToGold +
    copperToGold
  ).toFixed(0);
  return `${playerOne.name} has about ${totalGold} gold pieces in total.`;
}

console.log(addGold(500));
console.log(getTotalGold());

更新对象数组中的值

1 个答案: