Question

我有（可能是一个非常简单的）问题：

我一直在用


client.guilds.cache.map((guild) => {

等等，效果很好但我知道随着元素的增加，for 循环的效率更高。

我试过了：

for (const guild of client.guilds.cache) {
  console.log(guild.name)

但返回：未定义

如果我 console.log(guild) 我在控制台中获得了公会信息，名称绝对是其中的一部分

来自控制台：

[
  '',
  Guild {
    members: GuildMemberManager {
      cacheType: [class Collection extends Collection],
      cache: [Collection [Map]],
      guild: [Circular]
    },
    channels: GuildChannelManager {
      cacheType: [class Collection extends Collection],
      cache: [Collection [Map]],
      guild: [Circular]
    },
    roles: RoleManager {
      cacheType: [class Collection extends Collection],
      cache: [Collection [Map]],
      guild: [Circular]
    },
    presences: PresenceManager {
      cacheType: [class Collection extends Collection],
      cache: [Collection [Map]]
    },
    voiceStates: VoiceStateManager {
      cacheType: [class Collection extends Collection],
      cache: Collection [Map] {},
      guild: [Circular]
    },
    deleted: false,
    available: true,
    id: '',
    shardID: 0,
    name: "GA's Testingserver!",
    icon: '11a80a894a50cafd46c95451ed83f939',
    splash: null,
    discoverySplash: null,
    region: 'europe',
    memberCount: 5,
    large: false,
    features: [],
    applicationID: null,
    afkTimeout: 300,
    afkChannelID: null,
    systemChannelID: '',
    embedEnabled: undefined,
    premiumTier: 0,
    premiumSubscriptionCount: 0,
    verificationLevel: 'NONE',
    explicitContentFilter: 'DISABLED',
    mfaLevel: 0,
    joinedTimestamp: 1598456514616,
    defaultMessageNotifications: 'ALL',
    systemChannelFlags: SystemChannelFlags { bitfield: 0 },
    maximumMembers: 100000,
    maximumPresences: null,
    approximateMemberCount: null,
    approximatePresenceCount: null,
    vanityURLCode: null,
    vanityURLUses: null,
    description: null,
    banner: null,
    rulesChannelID: null,
    publicUpdatesChannelID: null,
    preferredLocale: 'en-US',
    ownerID: '',
    emojis: GuildEmojiManager {
      cacheType: [class Collection extends Collection],
      cache: [Collection [Map]],
      guild: [Circular]
    }
  }
]

出于某种原因，我无法理解这个......

Answer 1

根据 discord.js documentation，guild.cache 的类型为 collection 而不是 array。

您可以遍历集合中的每个 guild：

client.guilds.cache.each(guild => {
    console.log(guild.name);
});

或者您可以遍历数组中的每个 guild：

for (const guild of client.guilds.cache.array()) {
    console.log(guild.name);
}

Discord.js - 正确使用：for (const guild of client.guilds.cache)？

1 个答案: