javascript - 如何在 json 数组中定义重复的键？

Question

这个问题已经有答案了:

How can I access and process nested objects, arrays, or JSON? (31 个回答)

已关闭 4 年前。

我正在制作一个程序来解析 json 文件以获取 dnd 信息。我已经完成了该程序，但是，如果不手动给出数千个 key 的唯一 ID，我无法弄清楚如何为各种攻击定义重复的 key 。

我的 JSON 文件的一部分:

{
  "special_abilities": [
    {
      "name": "Legendary Resistance (3/Day)",
      "desc": "If the tarrasque fails a saving throw, it can choose to succeed instead.",
      "attack_bonus": 0
    },
    {
      "name": "Magic Resistance",
      "desc": "The tarrasque has advantage on saving throws against spells and other magical effects.",
      "attack_bonus": 0
    },
    {
      "name": "Reflective Carapace",
      "desc": "Any time the tarrasque is targeted by a magic missile spell, a line spell, or a spell that requires a ranged attack roll, roll a d6. On a 1 to 5, the tarrasque is unaffected. On a 6, the tarrasque is unaffected, and the effect is reflected back at the caster as though it originated from the tarrasque, turning the caster into the target.",
      "attack_bonus": 0
    },
    {
      "name": "Siege Monster",
      "desc": "The tarrasque deals double damage to objects and structures.",
      "attack_bonus": 0
    }
  ]
}

那么，我将如何定义每个 name key ？如果我可以将我在那里发布的内容定义为 searchFile.special_abilities ，我如何定义searchFile.special_abilities.name ？

Answer 1

您的 JSON 有效。您可以像这样访问解析后的 JSON 数据:

const searchFile = JSON.parse(jsonVarName)

const index = 2 // or whatever index you want

const name = searchFile.special_abilities[index].name

您还可以使用各种array methods使用数据做各种有趣的事情，例如按名称搜索:

const siegeMonster = searchFile.special_abilities.find(ability => ability.name === 'Siege Monster')