Question

我目前在this tutorial的服务器上运行一个discord.js机器人。但是，当我将if语句用于侦听消息时，node.js拒绝启动它。说if语句：

if (message.content === '!ping') {
    message.channel.send('Pong.');
}

编辑：

完整代码

const Discord = require('discord.js');
const client = new Discord.Client();

client.once('ready', () => {
    console.log('Ready!');
});

client.login('login token AAAAA');

client.on('message', message => {
    console.log(message.content);
});
if (message.content === '!ping') {
    message.channel.send('Pong.');
}

引发错误

if (message.content === '!ping') {
^

ReferenceError: message is not defined
    at Object.<anonymous> (C:\Users\epopova1\Desktop\poserBot\index.js:13:1)
[90m    at Module._compile (internal/modules/cjs/loader.js:1133:30)[39m
[90m    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1153:10)[39m
[90m    at Module.load (internal/modules/cjs/loader.js:977:32)[39m
[90m    at Function.Module._load (internal/modules/cjs/loader.js:877:14)[39m
[90m    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)[39m
[90m    at internal/main/run_main_module.js:18:47[39m

很抱歉这个问题，我在这里是完全陌生的

Answer 1

您需要将if语句放入message事件处理程序中，如下所示：

const Discord = require('discord.js');
const client = new Discord.Client();

client.once('ready', () => {
    console.log('Ready!');
});

client.login('login token AAAAA');

client.on('message', message => {
    console.log(message.content);
    if (message.content === '!ping') {
        message.channel.send('Pong.');
    }
});

为什么此if语句导致此JS代码出现问题？

1 个答案: