Mongo Notes

mongo.js

var MongoClient = require('mongodb').MongoClient;

// Connection URL
var url = 'mongodb://localhost:27017/mongo_demo';

module.exports = function createConnection() {
  
}

// Use connect method to connect to the server
MongoClient.connect(url, function(err, db) {
  console.log("Connected successfully to server");

  // Get the documents collection
  var collection = db.collection('mongo_demo_collection');

  // // Insert some documents
  // collection.insertMany([
  //   {a : 1}, {a : 2}, {a : 3}
  // ], function(err, result) {
  //   console.log("Inserted 3 documents into the collection");
  //   console.log(result);
  //   db.close();
  // });

  // Insert some documents
  collection.insertOne({a : 4}, function(err, result) {
    console.log("Inserted 1 document into the collection");
    // console.log(result);

    collection.find({a:1}).limit(1).toArray()
    .then((result) => {
      console.log(result);
      db.close();
    });

    // collection.findOne({a:1})
    // .then((result) => {
    //   console.log(result);
    //   db.close();
    // });
  });
});