Mongo Connection

var http = require('http');
var MongoClient = require('mongodb').MongoClient;
var url = "mongodb://localhost:27017/mydb";

MongoClient.connect(url, function(err, db) {
  if (err) throw err;
  db.createCollection("customers", function(err, res){
    if (err) throw err;
    console.log("Collection created!");
    db.close();
  });
});

MongoClient.connect(url, function(err, db) {
  if (err) throw err;
  var myobj = {name: "Company Inc", address: "Highway 37"};
  db.collection("customers").insertOne(myobj, function(err, res){
    if (err) throw err;
    console.log("1 document inserted");
    db.close();
  });
});

MongoClient.connect(url, function(err, db) {
  if (err) throw err;
  db.collection("customers").findOne({}, function(err, result){
    if (err) throw err;
    console.log(result.name);
    db.close();
  });
});