Use Mongoose in Node

gistfile1.js

// Database
var mongoose = require('mongoose');

// connect to the db, test is the default db name (type db in the mongo shell to see yours)
mongoose.connect('mongodb://localhost:27017/test');

var Schema = mongoose.Schema,
    ObjectId = Schema.ObjectId;

ThingSchema = new Schema({
  '_id': ObjectId,
  'a': String
});

// 'Thing' is the name of the mongo collection
var Thing = mongoose.model('Thing', ThingSchema);

// creating a new Thing
var newThing = new Thing({a:'hello world'});
newThing.save(function(err){
  // saving is asynchronous
  if(err) console.log("Something went wrong while saving the thing);
  else console.log("Thing was successfully saved");
});


// retrieving all Things
Thing.find({ /* mongo selectors go here */ } , function(err,docs){
  // find is also async
  // docs contains all the results
  // err contains the error if any
});