如何修复ReferenceError

Question

经过一些修改，没有定义message，而是receivedMessage.channel.bulkdelete(args.then (() => { ReferenceError: receivedmessage is not defined。我自己也不太确定这意味着什么，因为我是node.js和javascript的新手。如果我犯了什么错误，请告诉我！

client.on('message', (receivedMessage) => {
    if (receivedMessage.author == client.user) { // Prevent bot from responding to its own messages
        return
    }

    if (receivedMessage.content.startsWith("?")) {
        processCommand(receivedMessage)
    }
})

function processCommand(receivedMessage) {
    let fullCommand = receivedMessage.content.substr(1) // Remove the leading exclamation mark
    let splitCommand = fullCommand.split(" ") // Split the message up in to pieces for each space
    let primaryCommand = splitCommand[0] // The first word directly after the exclamation is the command
    let arguments = splitCommand.slice(1) // All other words are arguments/parameters/options for the command

    console.log("Command received: " + primaryCommand)
    console.log("Arguments: " + arguments) // There may not be any arguments

if (primaryCommand == "help") {
    helpCommand(arguments, receivedMessage)
} else if (primaryCommand == "multiply") {
    multiplyCommand(arguments, receivedMessage)
} else if(primaryCommand == "clear") {
    clearCommand(arguments, receivedMessage)
} else {
    receivedMessage.channel.send("I don't understand the command. Try `?help`, `?multiply` or '?clear'")
}

function helpCommand(arguments, receivedMessage) {
    if (arguments.length > 0) {
        receivedMessage.channel.send("It looks like you might need help with " + arguments + ".Try `!multiply 2 4 10` or `!multiply 5.2 7`")
    } else {
        receivedMessage.channel.send("I'm not sure what you need help with. Try `?help [topic]`")
    }
}

function multiplyCommand(arguments, receivedMessage) {
    if (arguments.length < 2) {
        receivedMessage.channel.send("Not enough values to multiply. Try `!multiply 2 4 10` or `!multiply 5.2 7`")
        return
    }
    let product = 1 
    arguments.forEach((value) => {
        product = product * parseFloat(value)
    })
    receivedMessage.channel.send("The product of " + arguments + " multiplied together is: " + product.toString())
    }
}

function clearCommand (arguments, receivedMessage) {
    if (!recievedMessage.member.hasPermission("MANAGE_MESSAGES")) 
        return receivedmessage.reply("You have no permission to use this command.Sad."); 
    if (!args[0]) 
        return receivedMessage.channel.send("Please specify a number.")
}
        receivedmessage.channel.bulkDelete(args[0]).then(() => {
        receivedMessage.channel.send(`Cleared ${args[0]} messages.`).then(msg => msg.delete(5000));
    }
,)

Answer 1

您需要使用receivedMessasge而不是message，因为这是您在该函数中选择的名称。

看起来您并没有多少经验，我建议您阅读官方的discord.js指南：https://discordjs.guide。它将教你如何编写不和谐的机器人，而不需要将许多奇怪的东西复制到你的代码中！

Answer 2

1)您定义的是receivedMessage而不是messsage

2) clear命令的代码不在任何函数中，它在任何消息之前执行一次。

您需要使用receivedMessage而不是message，并在processCommand函数中插入代码

if (primaryCommand == "help") {
    helpCommand(arguments, receivedMessage)
} else if (primaryCommand == "multiply") {
    multiplyCommand(arguments, receivedMessage)
} else if(primaryCommand == "clear") {
    if (!message.member.hasPermission("MANAGE_MESSAGES")) return message.reply("You have no permission to use this command.Sad."); 
    if (!args[0]) return message.channel.send("Please specify a number.")
    message.channel.bulkDelete(args[0]).then(() => {
        message.channel.send(`Cleared ${args[0]} messages.`).then(msg => msg.delete(5000));
    });
    // or create a function for this command
} else {
    receivedMessage.channel.send("I don't understand the command. Try `?help` or `?multiply`")
}