node js mongodb tutorial

() {Console.log ("MongoDB connected fail.");}); Mongoose.connection.on ("Disconnected",function() {Console.log ("MongoDB connected disconnected.");}); Router.get ("/",function(req,res,next) {//res.send (' hello,goods list. ')Stations.find ({},function(err,doc) {if(Err) {Res.json ({status:' 1 ', msg:err.message}); }Else{Res.json ({status:' 0 ', msg:‘‘, result:{count:doc.length, List:doc} })}); module.exports

Tags: style blog http io ar color OS sp forLearn how to import data into your MongoDB and then use Express to serve a simple node. js API.Import data into MongoDB:For exmaple, you had an Data.json file and contains some data.1. Start Mongod Service:// In the cmd$ mongod2. Open a new Tab, import the data:Mongoimport--db Simple--collection people--jsonarray Data.js

Tags: log data div cmd cal enc mod slash dependLast lesson learned how to use node. js to connect to a database, and this lesson we learned how to insert data. 1, using node. js to connect MongoDB data successfully, want to write data in the database, but show that db.collec

Label:A simple instance of node. js Connecting to MongoDB Install the node. JS Driver 　　 NPM Install Mongodb-save Connection var Mongodbclient = require (' MongoDB '). mongoclient; va

Label:node. js efficiently manipulating MongoDBMongoose Library in short, a convenient package for manipulating MongoDB databases in the node environment, an object model tool similar to Orm,mongoose converts data from a database into JavaScript objects for you to use in your app. Of course, you have to install the Environment

) {TenRes.send (' respond with a resource '); One }); A - //Query all user data -Router.get ('/users ',function(req, res, next) { theUsers.fetch (function(Err, users) { - if(err) { - Console.log (err); - } + res.render (' users ', {title: ' User list ', users:users})//This can also return data Res.json ({data:users}) directly in JSON format; - }) + }) AModule.exports = router;7. Added Users.jade under Views file1 extends Layout 2 3 Block Content 4 h1= Title//jade v

Label:Mongoose Library in short, a convenient package for manipulating MongoDB databases in the node environment, an object model tool similar to Orm,mongoose converts data from a database into JavaScript objects for you to use in your app. Of course, you have to install the Environment node. js and

shown 3, below we install the third-party module into the project directory Install 4. Project Structure App.js main file Bin is the startup file Node_modules for third-party modules Public is a resource file [frontend] Routes for routing files [background] views as view files [front end] PS: This project is currently an empty project, with a simple example 5, run the example, start the project NPM start As for why the NPM Start command, look at Package.json. Here is the command for the start

Node. js operates the mongodb addition, deletion, modification, and query function instance, nodejsmongodb This article describes the addition, deletion, modification, and query functions of node. js operations on mongodb. We will

collection.Db.users.find () \ Query the document you added 3. Project Connection Database Create a folder under the project root directory database, and then create a db.js E:\test \ Database\db.js [HTML] View plain copy var mongoose = require (' Mongoose '); var db = mongoose.connect (' Mongodb://localhost/text ');//; Connect to database var Schema = Mongoose.Schema; Create a model var userschema = new Schema ({ Name:string,

Basic tutorial on how to use the Request module to process HTTP requests in Node. js, node. jsrequest Here we will introduce a Node. js module -- request. With this module, http requests become super simple. The Request is simpl

variable db is the Foobar databaseSwitched to DB FoobarInserts a document into the collection, DB. Collection name. InsertDb.Blog.InsertObject * * When queryingShellDefault Maximum display20A matching document * * Returns all documents in the collectiondb. Blog. Find() //View a document in the collection db. Blog. FindOne() //Update document DB/blog. Update({title:' AA '}, Document Object) //Permanently delete the document from the database, deleting all document DB in the collection witho

to be displayed to generate HTML pages.The Ejs template engine is used in this article by App.set (' View engine ', ' Ejs '); set up using the Ejs template engine. by App.set (' views ', Path.join (__dirname, ' views ')), set the location where the template files are stored. Res.render (' index ', {title: ' Express 123 '), renders the template and returns the resulting page directly to the client. The first parameter, index, is the name of the template, omittin

Tutorial on installing mongoDB database in yum under centos on a single node, centosmongodb MongoDB deployment uses replica set + sharding to achieve high load. However, in actual testing, sometimes you only need to install a single mongodb for testing. Below is a single

line), Ucenter (after landing the page); index.html-- login.html-- ucenter.html-- 4. Finally, the routing control, in the routes file of the Index.js varexpress=require (' Express '); varrouter=express. Router (); varuser=require ('.. /database/db ') .user;/*gethomepage.*/ Router.get ('/', function (req,res) { res.render (' Index ', { title: ' index ' }; }); /*login */router.get ('/login ', function (req,res) { Res.render (' Login ',{title: ' login ' }); }); /* Ucenter*/router.post ('/ucenter

Label:Reprinted from http://my.oschina.net/reg/blog/289536Ctrl + Alt + T, open terminal, enter the following command to install:sudo apt-get install NodejsAfter the installation completes, the terminal input Nodejs, can enter node command;But the normal should be input node into command instead of Nodejs;In Ubuntu, node belongs to other applications, but continue

Tags: build complete version module name targe Modules INI MonLearning JS also has a period of time, ready to try to write a blog project, the front and back end of the development, the backend with node only provide data interface, the front end with vue-cli scaffolding, routing also by the front-end control, data asynchronous interaction with Vue a plug-in vue-resourse to do, database use

MongoDB is a general-purpose nosql that has been widely used in many places. Next we look at how to use the MongoDB database in node. js.1. Environment installationFirst from the MongoDB official website download, install, configure the environment variables, to ensure that

("Node-mongo-examples", Server,{safe:true});d B.open (function(err,db) {db.collection ("Users",function(err,collection) {if(ERR)Throwerr; Else{collection.find ({username:{$inch: ["Yan Si", "Three"]}}). ToArray (function(err,docs) {if(ERR)Throwerr; Else{console.log (docs); Db.close (); } }); } });});insert a batch of data and search Type==food and the Price field value is less than 10varMongo=require ("

Leadership to find a conversation, the company is not mixed, said to think clearly after the direction of development what. Just think of node. js.First of all, look at the introduction, the general understanding of node. js, Baidu Search is indeed a lot of chaos, feeling or know the point. Attach the known topic node.