Question

我正尝试使用下面显示的代码检查频道主题，但它一直给我TypeError：无法读取未定义的属性“ includes”，我希望有人帮助我。谢谢！

我尝试过更改功能并研究include方法，但找不到与discord.js相关的任何内容

const guild = message.guild;
      const channel = message.guild.channels;
      function checking(channel) {
          channel.topic.includes(message.author.id)
      }
      const channelOpen = guild.channels.some(checking)
      if(channelOpen === true) return message.channel.send("You already have a ticket open!")```

Check the channel topic for the author of the message's ID and if it finds their ID in a topic, return with a message.

Answer 1

message.guild.channels没有topic属性，这就是为什么出现TypeError的原因。您可以改用find()方法，如下所示：

const checking = message.guild.channels.find(channel => channel.topic === message.author.id) || null
if (checking) return message.channel.send("You already have a ticket open!")
[...]

Answer 2

因此，没有足够的信息来完全回答这个问题，但是我可以告诉您。它告诉您您正在尝试访问未定义对象上的属性。公会arr根本没有属性（message.author.id），这意味着它是未定义的。由于不存在该属性，因此无法使其具有任何类型的include属性。

您需要的是访问数组中的对象，而不是数组本身。诸如guild [0] .something.something之类的东西将引用实例化的对象。这仅适用于阵列。如果要在对象上执行此操作，则需要使用object1.hasOwnProperty（'* Item以检查*'） https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty

    const object1 = new Object();
object1.property1 = 42;

console.log(object1.hasOwnProperty('property1'));
// expected output: true

console.log(object1.hasOwnProperty('toString'));
// expected output: false

console.log(object1.hasOwnProperty('hasOwnProperty'));





  const channel = message.guild.channels; 
   // You should log the guild object* to see Data. Please show data when 
   //posting question. For example message[0].guild.channel ? 

  function checking(channel) {

      channel.topic.includes(message.author.id)
      // I would write it like 
     // return channel.topic.hasOwnProperty(message.author.id)
  }
   //Checking is declared but never called ? 

  const channelOpen = guild.channels.some(checking)
   //you did not post the guild object or arr, so not sure why you are calling 
   //some with the checking function ? 
   //I think what your trying to do is channelOpen = checking(channel) ? 
  if(channelOpen) {
  // you dont need == true 

   return message.channel.send("You already have a ticket open!")
    }

Answer 3

  var count = 0
  message.guild.channels.forEach(i => {
    if(count == 1) return; //If ID is already found.
    if(i.type == 'voice') return; //If it's voice channel, return.
    if(i.topic == message.author.id){ count++; return message.reply('You already have a ticket open!') }
    //If ID is already found, increase the number to stop code from executing and message author about ticket.
  });

我用的是： forEach loop

if statements

渠道属性：type，topic

Increment上的 count ，您可以仅更改 var 和 let 变量。

有关变量的更多信息：here。

如果我帮助过您，请将其标记为答案，这样我可以获得较高的声誉。谢谢<3

如何查看行会中所有频道的主题？

3 个答案: