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[英]TypeError: Cannot read property 'add' of undefined Discord.js javascript
[英]TypeError: Cannot read property 'data' of undefined | discord.js
所以我正在制作一個 Discord 機器人,我有一個從 r/memes 獲取 meme 的 meme 命令,但有時它會給出 meme,有時代碼會崩潰並在控制台中出現此錯誤:
TypeError: Cannot read property 'data' of undefined
我不太確定它會是什么,所以如果有人可以幫助我,那將有很大幫助。
這是我的!meme
命令代碼:
const https = require('https');
const Discord = require('discord.js');
const url = 'https://www.reddit.com/r/memes/hot/.json'
module.exports = {
name: 'meme',
description: 'sends meme',
execute(message, args) {
https.get(url, (result) => {
var body = ''
result.on('data', (chunk) => {
body += chunk
})
result.on('end', () => {
var response = JSON.parse(body)
var index = response.data.children[Math.floor(Math.random() * 99) + 1].data
if (index.post_hint !== 'image') {
var text = index.selftext
const textembed = new Discord.MessageEmbed()
.setTitle(subRedditName)
.setColor(4388341)
.setDescription(`[${title}](${link})\n\n${text}`)
.setURL(`https://reddit.com/${subRedditName}`)
message.channel.send(textembed)
}
var image = index.preview.images[0].source.url.replace('&', '&')
var title = index.title
var link = 'https://reddit.com' + index.permalink
var subRedditName = index.subreddit_name_prefixed
if (index.post_hint !== 'image') {
const textembed = new Discord.MessageEmbed()
.setTitle(subRedditName)
.setColor(4388341)
.setDescription(`[${title}](${link})\n\n${text}`)
.setURL(`https://reddit.com/${subRedditName}`)
message.channel.send(textembed)
}
console.log(image);
const imageembed = new Discord.MessageEmbed()
.setTitle(subRedditName)
.setImage(image)
.setColor(4388341)
.setDescription(`[${title}](${link})`)
.setURL(`https://reddit.com/${subRedditName}`)
message.channel.send(imageembed)
}).on('error', function (e) {
console.log('Got an error: ', e)
})
})
},
}
這是因為您設置了一個硬編碼數字 ( 99
) 以從response.data.children
數組中獲取一個隨機元素。 我剛剛檢查了該數組的長度,它是 26。如果你的隨機數大於那個(並且你正在生成一個介於 1 和 100 之間的隨機數), response.data.children[randomNumber]
將是undefined
的。
嘗試使用數組的長度作為最大數量,這樣它就不會超過元素的數量:
let index =
response.data.children[
Math.floor(Math.random() * response.data.children.length)
].data;
完整代碼:
module.exports = {
name: 'meme',
description: 'sends meme',
execute(message, args) {
https.get(url, (result) => {
let body = '';
result.on('data', (chunk) => {
body += chunk;
});
result
.on('end', () => {
const response = JSON.parse(body);
const index =
response.data.children[
Math.floor(Math.random() * response.data.children.length)
].data;
const image = index.preview.images[0].source.url.replace(
'&',
'&',
);
const title = index.title;
const link = 'https://reddit.com' + index.permalink;
const subRedditName = index.subreddit_name_prefixed;
if (index.post_hint !== 'image') {
const text = index.selftext;
const textembed = new Discord.MessageEmbed()
.setTitle(subRedditName)
.setColor(4388341)
.setDescription(`[${title}](${link})\n\n${text}`)
.setURL(`https://reddit.com/${subRedditName}`);
message.channel.send(textembed);
}
const imageembed = new Discord.MessageEmbed()
.setTitle(subRedditName)
.setImage(image)
.setColor(4388341)
.setDescription(`[${title}](${link})`)
.setURL(`https://reddit.com/${subRedditName}`);
message.channel.send(imageembed);
})
.on('error', function (e) {
console.log('Got an error: ', e);
});
});
},
};
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