Discord.js/javascript issue with a error. ReferenceError: command not defined

Question

const Discord = require("discord.js");


const bot = new Discord.Client();

let prefix="!"

bot.on("ready", () => {
  bot.user.setStatus("idle");
console.log(`Demon Is Online`)


const update = () => {
    bot.user.setActivity("!help | residing on " + bot.guilds.size + " Servers", { type: 'WATCHING' }); 
};

bot.on('ready', update);
bot.on('guildCreate', update);
bot.on('guildRemove', update);

bot.on("message", message => {
    if(message.author.bot) return;
    if(message.channel.type === "dm") return;

    let messageArray = message.content.split(" ");
    let command = messageArray[0];
    let args = messageArray.slice(1);

   if(!command.startsWith(prefix)) return;

});

    if(command === `${prefix}userinfo`) {
        let embed = new Discord.RichEmbed()
        .setAuthor(message.author.username)
        .setColor("#3498db")
        .setThumbnail( `${message.author.avatarURL}`)
        .addField("Name", `${message.author.username}#${message.author.discriminator}`)
        .addField("ID", message.author.id)
       
        message.reply("I've Sent Your User Info Through DM!");
        message.channel.send({embed}); 

}}); 


    if("command" === `${prefix}help`) {
        let embed = new Discord.RichEmbed()
        .addField("!help", "gives you this current information")
        .setTitle("Help")
        .setColor("#3498db")
        .addField("!userinfo", "gives you info about a user(currently being worked on)")
        .addField("!serverinfo","gives you info about a server(currently working on it)") 
        .addField("link to support server","https://discord.gg/NZ2Zvjm")
        .addField("invite link for bot","https://discordapp.com/api/oauth2/authorize?client_id=449983742224760853&permissions=84993&scope=bot")


  message.reply("here's a list of commands that i'm able to do")
        message.channel.send({embed});
    

 
    messageArray = message.content.split("");
    let command = messageArray[0];
        if(command === `${prefix}serverinfo`) {
            let embed = new Discord.RichEmbed()
            .setAuthor(message.author.username)
            .setColor("#3498db")
            .addField("Name", `${message.guild.name}`)
            .addField("Owner", `${message.guild.owner.user}`)
            .addField("Server ID" , message.guild.id)
            .addField("User Count", `${message.guild.members.filter(m => m.presence.status !== 'offline').size} / ${message.guild.memberCount}`)
            .addField("Roles", `${message.guild.roles.size}`);


            message.channel.send({embed});
         } 
        };

bot.login("token goes here")

我有这段代码，需要帮助阻止我的 discord 机器人上线。我使用 javascript 和 discord.js 和 node.js 并且可以使用帮助我尝试搜索 youtube 和不和谐的服务器并询问一些朋友，但他们都告诉我学习我一直在尝试的语言。但无论如何这是我的错误

output

Answer 1

命令在其被引用的上下文中不存在。

你有

bot.on("message", message => {
    if(message.author.bot) return;
    if(message.channel.type === "dm") return;

    let messageArray = message.content.split(" ");
    let command = messageArray[0];
    let args = messageArray.slice(1);

   if(!command.startsWith(prefix)) return;

});

然后您在此处引用下面的命令。这意味着它超出了范围，因为它被定义为 bot.on('message' ... 将命令片段粘贴到 bot.on('message' 代码中，然后重置你的机器人并尝试向它发送消息，我想你会看到想要的结果。

完整示例如下所示：

bot.on('ready', update)
bot.on('guildCreate', update)
bot.on('guildRemove', update)

bot.on('message', message => {
  if (message.author.bot) return
  if (message.channel.type === 'dm') return

  let messageArray = message.content.split(' ')
  let command = messageArray[0]
  let args = messageArray.slice(1)

  if (!command.startsWith(prefix)) return

  if (command === `${prefix}userinfo`) {
    let embed = new Discord.RichEmbed()
      .setAuthor(message.author.username)
      .setColor('#3498db')
      .setThumbnail(`${message.author.avatarURL}`)
      .addField(
        'Name',
        `${message.author.username}#${message.author.discriminator}`
      )
      .addField('ID', message.author.id)

    message.reply("I've Sent Your User Info Through DM!")
    message.channel.send({ embed })
  }

  if (`${prefix}help` === 'command') {
    let embed = new Discord.RichEmbed()
      .addField('!help', 'gives you this current information')
      .setTitle('Help')
      .setColor('#3498db')
      .addField(
        '!userinfo',
        'gives you info about a user(currently being worked on)'
      )
      .addField(
        '!serverinfo',
        'gives you info about a server(currently working on it)'
      )
      .addField('link to support server', 'https://discord.gg/NZ2Zvjm')
      .addField(
        'invite link for bot',
        'https://discordapp.com/api/oauth2/authorize?client_id=449983742224760853&permissions=84993&scope=bot'
      )

    message.reply("here's a list of commands that i'm able to do")
    message.channel.send({ embed })

    messageArray = message.content.split('')
    let command = messageArray[0]
    if (command === `${prefix}serverinfo`) {
      let embed = new Discord.RichEmbed()
        .setAuthor(message.author.username)
        .setColor('#3498db')
        .addField('Name', `${message.guild.name}`)
        .addField('Owner', `${message.guild.owner.user}`)
        .addField('Server ID', message.guild.id)
        .addField(
          'User Count',
          `${
            message.guild.members.filter(m => m.presence.status !== 'offline')
              .size
          } / ${message.guild.memberCount}`
        )
        .addField('Roles', `${message.guild.roles.size}`)

      message.channel.send({ embed })
    }
  }
})

bot.login('token goes here')

请注意，我并没有解决你所有的问题，似乎还剩下一些散兵游勇，我只是试着回答你的具体问题:)

Discord.js/javascript issue with a error. ReferenceError: command not defined

Discord.js/javascript issue with a error. ReferenceError: command not defined

javascript

bots

node.js

discord

discord.js