Question

我设置了addRole命令，该命令有效，但是如果有人仅键入“！rbu”但没有成员，则机器人会出错。

也许强迫一个人使代码起作用，他们必须输入这个人，但是这对我来说是多么新的


  let args = message.content.substring(PREFIX.length).split(" ");

switch(args[0]){
   case'rbu':

case'rbu':

if(!message.member.roles.find(r => r.name === "?GroupI?")) return message.channel.send('You cant do that')

let memberToModify = message.mentions.members.first();
var roleToAdd = message.guild.roles.find(role => role.name === "?GroupII?");
memberToModify.addRole(roleToAdd);

break;

    }
  }
)


I expect this to do nothing or message that member must type !rbu and user

memberToModify.addRole(roleToAdd)
               ^

TypeError: Cannot read property 'addRole' of undefined```

Answer 1

首先，您有2个case'rbu':，这很奇怪。然后，您需要确保该消息实际上以message.mentions的形式提及，例如：

let args = message.content.substring(PREFIX.length).split(" ");

switch(args[0]){
   case'rbu':

    if(!message.member.roles.find(r => r.name === "?GroupI?") || !message.mentions) return
message.channel.send('You cant do that')

    let memberToModify = message.mentions.members.first();
    var roleToAdd = message.guild.roles.find(role => role.name === "?GroupII?");
    memberToModify.addRole(roleToAdd);

break;
}

无法读取未定义的属性“ addRole”

1 个答案: