Question

我试图创建一个 const 成员，但它显示“类型错误：无法读取未定义的属性 'users'”

module.exports = {
    name: 'welcome',
    description: 'welcome',
    execute(message, args, Discord) {

        const member = message.mentions.users.first();

        if(message.member.permissions.has('ADMINISTRATOR')){
            message.channel.send(
                new MessageEmbed()
                .setTitle('title')
                .setImage('imageurl')
                .setDescription('desc')
            )
        }else{
            return message.channel.send(`You don't have any permissions to do that!`)
        }
    }
}

Answer 1

正如特雷弗·汤普森所说。那是因为你没有提到任何人。我已经测试过它并且它有效。以下是您应该使用的：

module.exports = {
    name: 'welcome',
    description: 'welcome',
    execute(message, args, Discord) {

        const member = message.mentions.users.first();
if (!member) { // If a user is not mentioned
message.channel.send(`Hey ${message.author} you need to mention a user to welcome!`)
return false; // < Even after it checks if a user is mentioned or not, use return false; This will prevent you from getting error of `users` being undefined
}
        if(message.member.permissions.has('ADMINISTRATOR')){
            message.channel.send(
                new MessageEmbed()
                .setTitle('title')
                .setImage('imageurl') 
                .setDescription('desc')
            )
        }else{
            return message.channel.send(`You don't have any permissions to do that!`)
        }
    }
}

Answer 2

这是因为提及未定义，您可以通过在提及后面添加问号来忽略此错误。

const member = message?.mentions?.users.first();

类型错误：无法读取未定义的属性“用户”

2 个答案: