javascript - 如何使 discord bot 的命令不区分大小写

Question

const Discord = require("discord.js");
//ignore 1 up and 1 down
const client = new Discord.Client();
//prefix 
const prefix = `+`;
//log for me
client.once(`ready`, () => {
    console.log("IM POWERED UP")
});


//commands

client.on(`message`, message =>{
    const args = message.content.slice(prefix.lengh).split(/ +/);

    //Username..(embed)
    if (message.content === `${prefix}Username`){
        let messageArray = message.content.split(" ");
        let args = message.content.split(` `);
        let command = messageArray[1].toLowerCase();
        const embed = new Discord.MessageEmbed()
        .setTitle(`user information`)
        .addField(`Your Username is`, message.author.username)
        .addField(`Bugs`, `To report bugs please go to TxPsycho#1080 and you may earn a reward!`)
        .setThumbnail(message.author.displayAvatarURL())
        .setFooter(`Wanna get Valorant cheats? Join here`)
        .setColor(`RANDOM`)
        message.channel.send(embed);
    }
    
    //help command
    if (message.content === `${prefix}Help`){
        const embed = new Discord.MessageEmbed()
        .setTitle(`Help`)
        .addField(`A list of commands are below!`)
        .setThumbnail(message.author.displayAvatarURL())
        .setDescription(`AMOTHERFUCKINGTESTYOUMOTHERFUCKAYOUTHINKITSFUNNYCALLINGAT2AM`)
        .setColor(`RANDOM`)
        message.channel.send(embed);
    }
});


//ignore this and leave it at bottom
client.login(`Nz`)

I am not sure how to make the commands caps insensitive, this is the error it’s been giving me. I have been searching but found no information. Down below is the link to an error that I have been receiving when I try to debug the code.

Click here to see the error picture

Answer 1

就像流氓说的那样，问题是在这里调用未定义的 toLowerCase:

let command = messageArray[1].toLowerCase();

真正的命令是 0，因为数组是 0 索引的

你可能想shift它，这样你就可以更容易地获得参数:

消息:!help 12 24 36

const args = message.content.split(" ");
const command = args.shift().toLowerCase();

console.log(args);
// => [12, 24, 36]

console.log(args[0]);
// => 12

之后你只需比较 command 而不是 message.content:

if(command === "!help") {


}