discord bot 命令，提及未定义答案

【问题标题】：discord bot command, mention undefineddiscord bot 命令，提及未定义
【发布时间】：2021-12-20 09:32:23
【问题描述】：

我开始编写一个不和谐机器人，并想设置一个命令，让它说“用户收到了另一个用户的拥抱”，但实际上是“未定义”收到了用户的拥抱”，而我为未定义的提及设置了另一种方式。

const Discord = require("discord.js");
const { UserAgent } = require("discord.js/src/util/Constants");
const ytdl = require("ytdl-core");
const Client = new Discord.Client({
    intents : [
        Discord.Intents.FLAGS.GUILDS,
        Discord.Intents.FLAGS.GUILD_MESSAGES
    ]
});

const prefix ="<";

Client.on("ready", () => {
    console.log("bot opérationnel")

});

Client.on("message", message => {
    if (message.author.bot) return;
    if (message.content.startsWith (prefix + "hug")){
        let mention = message.mentions.members.first();

        if(mention == undefined){
            message.channel.send("u have to hug someone who actually exists");
        }
        else {
            const embed = new Discord.MessageEmbed()
            .setColor("DARK_RED")
            .setTitle(":hugging: " + mention.displayname + " received a hug from " + message.author.username + " !")
            .setImage("https://cdn.weeb.sh/images/ryCG-OatM.gif");

        message.channel.send({embeds: [embed]});
        }
    }
});

Client.login("token");

【问题讨论】：

标签： javascript discord discord.js

【解决方案1】：

<GuildMember>.displayname 不是有效属性。正确的属性是<GuildMember>.displayName（注意驼峰）

我已更正您的代码：

const Discord = require("discord.js");
const { UserAgent } = require("discord.js/src/util/Constants");
const ytdl = require("ytdl-core");
const Client = new Discord.Client({
    intents : [
        Discord.Intents.FLAGS.GUILDS,
        Discord.Intents.FLAGS.GUILD_MESSAGES
    ]
});

const prefix ="<";

Client.on("ready", () => {
    console.log("bot opérationnel")

});

Client.on("message", message => {
    if (message.author.bot) return;
    if (message.content.startsWith (prefix + "hug")){
        let mention = message.mentions.members.first();

        if(mention == undefined){
            message.channel.send("u have to hug someone who actually exists");
        }
        else {
            const embed = new Discord.MessageEmbed()
            .setColor("DARK_RED")
            .setTitle(":hugging: " + mention.displayName + " received a hug from " + message.author.username + " !")
            .setImage("https://cdn.weeb.sh/images/ryCG-OatM.gif");

        message.channel.send({embeds: [embed]});
        }
    }
});

Client.login("token");

【讨论】：