/**cnpm install mongodb */var MongoClient = require('mongodb').MongoClient;var DB_CONN_STR = 'mongodb://test:123456@127.0.0.1:27017/test'; // 數(shù)據(jù)庫為 testvar insertData = function (db, callback) {  //連接到表 site  var collection = db.collection('site');  //插入數(shù)據(jù)  var data = [{ "name": "網(wǎng)站1", "url": "www.test1.com" }, { "name": "網(wǎng)站2", "url": "www.test2.com" }];  collection.insert(data, function (err, result) {    if (err) {      console.log('Error:' + err);      return;    }    callback(result);  });}var selectData = function (db, callback) {  //連接到表  var collection = db.collection('site');  //查詢數(shù)據(jù)  var whereStr = { "name": '網(wǎng)站1' };  collection.find(whereStr).toArray(function (err, result) {    if (err) {      console.log('Error:' + err);      return;    }    callback(result);  });}var updateData = function (db, callback) {  //連接到表  var collection = db.collection('site');  //更新數(shù)據(jù)  var whereStr = { "name": '網(wǎng)站1' };  var updateStr = { $set: { "url": "https://www.test1.com" } };  collection.update(whereStr, updateStr, function (err, result) {    if (err) {      console.log('Error:' + err);      return;    }    callback(result);  });}var delData = function (db, callback) {  //連接到表  var collection = db.collection('site');  //刪除數(shù)據(jù)  var whereStr = { "name": '網(wǎng)站1' };  collection.remove(whereStr, function (err, result) {    if (err) {      console.log('Error:' + err);      return;    }    callback(result);  });}MongoClient.connect(DB_CONN_STR, function (err, db) {  if (err) {    console.log(err);    return;  }  console.log("連接成功！");  //1、插入  insertData(db, function (result) {    console.log(result);    db.close();  });  //2、查詢數(shù)據(jù)  selectData(db, function (result) {    console.log(result);    db.close();  });  //3、更新數(shù)據(jù)  updateData(db, function (result) {    console.log(result);    db.close();  });  //4、刪除數(shù)據(jù)  delData(db, function (result) {    console.log(result);    db.close();  });});

node mongodb_demo.js