MongoDB Node.js Driver and MongoClient All In One

The next generation Node.js driver for MongoDB

$ npm i mongodb
# OR
$ npm i -S mongodb
# OR
$ npm install mongodb --save

https://mongodb.github.io/node-mongodb-native/index.html

https://www.mongodb.com/docs/drivers/node/current/

https://learn.mongodb.com/learning-paths/using-mongodb-with-nodejs

https://mongodb.github.io/node-mongodb-native/Next/

The URL connection format

mongodb://[username:password@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database][?options]]

// new MongoClient

https://mongodb.github.io/node-mongodb-native/driver-articles/mongoclient.html#the-url-connection-format

https://mongodb.github.io/node-mongodb-native/api-generated/mongoclient.html

demos

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

// MongoClient.connect
MongoClient.connect("mongodb://localhost:27017/integration_test", function(err, db) {
  test.equal(null, err);
  test.ok(db != null);

  db.collection("replicaset_mongo_client_collection").update({a:1}, {b:1}, {upsert:true}, function(err, result) {
    test.equal(null, err);
    test.equal(1, result);

    db.close();
    test.done();
  });
});

var Db = require('mongodb').Db,
    MongoClient = require('mongodb').MongoClient,
    Server = require('mongodb').Server,
    ReplSetServers = require('mongodb').ReplSetServers,
    ObjectID = require('mongodb').ObjectID,
    Binary = require('mongodb').Binary,
    GridStore = require('mongodb').GridStore,
    Grid = require('mongodb').Grid,
    Code = require('mongodb').Code,
    BSON = require('mongodb').pure().BSON,
    assert = require('assert');

  // Set up the connection to the local db ✅
  var mongoclient = new MongoClient(new Server("localhost", 27017), {native_parser: true});

  // Open the connection to the server
  mongoclient.open(function(err, mongoclient) {

    // Get the first db and do an update document on it
    var db = mongoclient.db("integration_tests");
    db.collection('mongoclient_test').update({a:1}, {b:1}, {upsert:true}, function(err, result) {
      assert.equal(null, err);
      assert.equal(1, result);

      // Get another db and do an update document on it
      var db2 = mongoclient.db("integration_tests2");
      db2.collection('mongoclient_test').update({a:1}, {b:1}, {upsert:true}, function(err, result) {
        assert.equal(null, err);
        assert.equal(1, result);

        // Close the connection
        mongoclient.close();
      });
    });
  });

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标签：Node,MongoDB,require,Driver,db,mongoclient,https,mongodb,MongoClient
From： https://www.cnblogs.com/xgqfrms/p/17754405.html