nodejs操作mogodb修改数据信息

var mongodb = require('mongodb');
var server = new mongodb.Server('localhost', 27017, {auto_reconnect: true});
var db = new mongodb.Db('mydb', server, {safe: true});
db.open(function(err, db) {
  if(!err) {
    db.collection('mycoll', {
        safe: true
      }, function(err, collection) {
        collection.update({id: 1}, {$set: {name: "lily"}}, {safe: true}, function(err, result) {
          console.log(result);
        });
      } else {
        console.log(err);
      }
    });
});