Question

我正在尝试使用JSON数据库创建一个简单的小型每日奖励系统，以存储奖励和收到它们之前的剩余时间。这是我的代码：

   var user = message.author.id;
   var userData = JSON.parse(fs.readFileSync('./Toasty/users.json', 'utf8'));

   var breadcrumbsRandom = breadcrumbs[Math.floor(Math.random() * breadcrumbs.length)];
   var breadRandom = bread[Math.floor(Math.random() * bread.length)];
   var toastRandom = toast[Math.floor(Math.random() * toast.length)];
   var toastersRandom = toasters[Math.floor(Math.random() * toasters.length)];

   message.channel.sendMessage(`**${message.author.username}**, you have received the daily rewards of **${breadcrumbsRandom}** breadcrumbs, **${breadRandom}** slices of bread, **${toastRandom}** pieces of toast and **${toastersRandom}** toasters!`);

   var breadcrumbsInt = parseInt(breadcrumbsRandom);
   var breadInt = parseInt(breadRandom);
   var toastInt = parseInt(toastRandom);
   var toastersInt = parseInt(toastersRandom);

   if (!userData[user]) userData[user] = {
       "breadcrumbs": 0,
       "bread": 0,
       "toast": 0,
       "toasters": 0
   };

   console.log(userData[user].breadcrumbs);
   console.log(breadcrumbsInt);

   userData[user].breadcrumbs = userData[user].breadcrumbs + breadcrumbsInt;
   userData[user].bread = userData[user].bread + breadInt;
   userData[user].toast = userData[user].toast + toastInt;
   userData[user].toasters = userData[user].toasters + toastersInt;
   var updateRewards = JSON.stringify(userData, null, 2);
   fs.writeFile('./Toasty/users.json', updateRewards);

问题是当我记录它时，userData [user] .breadcrumbs是未定义的，因此如果我记录了这些值，那么.bread .toast和.toasters就是这样。我不明白为什么它没有定义。另外，当使用writeFile并且我检查.json文件有什么时，它会对面包屑，面包，烤面包和烤面包机值显示为null。提前感谢您的帮助和时间！

不明白为什么这个数字是未定义的，以及为什么另一个值为null

0 个答案: