如何使用Mongodb和Node.js删除所有帖子和单个用户

const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://localhost:27017'; // Mongodb数据库的连接URL

MongoClient.connect(url, function(err, client) {
  if (err) throw err;
  console.log('Connected to Mongodb database');
  const db = client.db('your_database_name'); // 替换为你的数据库名称

  // 在这里执行删除操作
});

db.collection('posts').deleteMany({}, function(err, result) {
  if (err) throw err;
  console.log(result.deletedCount + ' posts deleted');
});

const userId = 'user_id_to_delete'; // 替换为要删除的用户ID

db.collection('users').deleteOne({ _id: userId }, function(err, result) {
  if (err) throw err;
  console.log(result.deletedCount + ' user deleted');
});