计算数组中的和，并对mongodb进行排序

const numbers = [1, 2, 3, 4, 5];
const sum = numbers.reduce((acc, val) => acc + val, 0);
console.log(sum); // 输出: 15

[
  { "name": "Product A", "price": 10 },
  { "name": "Product B", "price": 20 },
  { "name": "Product C", "price": 15 }
]

const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://localhost:27017';
const dbName = 'mydb';

MongoClient.connect(url, function(err, client) {
  if (err) throw err;
  const db = client.db(dbName);
  const collection = db.collection('products');

  collection.find().sort({ price: 1 }).toArray(function(err, result) {
    if (err) throw err;
    console.log(result);
    client.close();
  });
});

const numbers = [1, '2', 3, 4, 5];
const sum = numbers.reduce((acc, val) => {
  if (typeof val === 'number') {
    return acc + val;
  }
  return acc;
}, 0);
console.log(sum); // 输出: 13

const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://localhost:27017';
const dbName = 'mydb';
const collectionName = 'products';

MongoClient.connect(url, function(err, client) {
  if (err) throw err;
  const db = client.db(dbName);
  const collection = db.collection(collectionName);

  collection.find().sort({ price: 1 }).toArray(function(err, result) {
    if (err) throw err;
    console.log(result);
    client.close();
  });
});