node js connect to db2

In the previous section, we talked about the Library management system login, I believe that we have a jade template and angular JS also have a understanding, today we look at a book information input. Here we are going to use the NoSQL database, which is used by MongoDB in this blog post. Ok. Mongo DB Installation I don't have to say much, then the node. JS Plat

1. Environment: Windows Server (64bit)2. Download: Download Windows Installer (. msi) from https://nodejs.org/download/3. Install: Next ....4. Test:4.1 Writing examplesvar http = require (' http '); Http.createserver (function (req, res) { Res.writehead ($, {' Content-type ': ' Text/plain '}); 4.2 Execution4.3 Enter ...Access http://127.0.0.1:1337 via browser to get Hello World responsePlay Socket.io1. Follow it: http://socket.io/get-started/chat/2. Problems encountered2.1 Install Expres

add the start command, such as the default start, and the NPM start to represent the node./bin/www command.App.js fileLoad Dependent Library, originally this class library is encapsulated in Connect, now need to note load separatelyVarexpress = require (' Express ');Varpath = require (' path ');Varfavicon = require (' Serve-favicon ');Varlogger = require (' Morgan ');Varcookieparser = require (' Cookie-par

Recently, I have been studying nodejs. nodejs is a parallel and event-based javascript development environment. This is easy to say, but it has made me suffer a lot during development. The following describes how to build the node. js development environment. I developed it in windows, so I set up the node. js develop

Using Redis under node. js, First:1, there is a server with Redis installed, of course, installed in this machine is also OK2, this machine, that is, the client, to install node. js3, the project to install the Nodejs_redis moduleNote that the 3rd, not the local installation on the line, but to say, to install (reference) in the project.method is, DOS window, und

Roughly read a Nodejs book for a while, have a preliminary understanding of grammar. But I still can't write an example. Recently my seniors gave me this book is very introductory "node. JS Real" electronics industry press. After all, the library borrowed, the publication time is two years ago. A lot of code has been updated. In particular, the Express 4.x has a lot of modifications compared to the Express

follows:$ node main. The program finishes writing. View the contents of the Output.txt file:$ cat Output. TXT Stream is an abstract interface Pipe flowThe pipeline provides a mechanism for outputting a stream to the input stream. Typically we use it to fetch data from one stream and pass it to another stream.As shown in the picture above, we compare the file to a water-filled bucket, and the water is the contents of the file, we use a pipe (p

a record in the database, including the greeting, foo, and _ id fields; Express: I would like to describe the last engine Express in one sentence: Is a simple and flexible node. js Web application framework that provides a series of powerful features to help you create various Web applications. A wide range of HTTP tools and middleware from the Connect framewor

Goeasy,It is a third-party push service platform that uses itsApireal-time push can be easily done! Personal feelingGoeasyPush more stable, push to sendFast , easy to understand code and quick to get startedBrowser compatibility:GoeasyPushSupportWebSocketand thePollingtwo ways to connect to supportIE6And above, while also supporting other browsers such asFirefox, Chrome, Safariand so on. Support different development languages are held:GoeasyPushprovi

Goeasy,It is a third-party push service platform that uses itsApireal-time push can be easily done! Personal feelingGoeasyPush more stable, push to sendFast , easy to understand code and quick to get startedBrowser compatibility:GoeasyPushSupportWebSocketand thePollingtwo ways to connect to supportIE6And above, while also supporting other browsers such asFirefox, Chrome, Safariand so on. Support different development languages are held:GoeasyPushprovi

var path = require ('path'= { './app/ Index.js', output: { 'bundle.js', ' Dist ' ) }};When looking at some configuration files, such as webpack.config.js, often see the code above, sometimes tangled writing, in fact, this is the node. JS (Path module) provided by some of the small tools for processing the file path.Some of the common uses are: Method Describe Pa

The Redis database adopts a simple design concept. The latest source code package is less than 2 Mb. Its usage is also different from the general database. The following article introduces how node. js uses the redis database to cache data. If you need it, let's take a look at it. The Redis database adopts a simple design concept. The latest source code package is less than 2 Mb. Its usage is also different

": " 4.1.2 "," Jade ":" 1.3.1 "," Mongoskin ":" 1.4.1 "," stylus ":" 0.44.0 " }}4.app.js Project Startup file configurationCreate the project start file app.js in the root directory, open app.js and editThe configuration file for App.js mainly involves the following steps:1) Introduction of dependency,// dependency introduced var express = require (' Express '= require (' http '= require (' path ');2) Setting the relevant configurationInstantiation of Express.jsvar app = Express ();Configuratio

when the client requests an HTTP upgrade. function Callback (Request,response,head)Clienterror: Emitted when a client connection socket issues an error. function callback (error,socket) {}To start the HTTP server, first create the object using the Createserver ([Requestlistener]) method and then pass through Listen (Port,[hostname],[backlog],[callback]).Port: PortsHostname: Host NameBacklog (Backlog): Specifies the maximum number of pending connections that are allowed to be queued. Default 511

Zhanhailiang Date: 2014.11.16This article explains how to rely on the MySQL package on the node. JS platform for MySQL access.1. Installation:[ root@ ~/ Wade/ nodejs/ nodebeginner/ mysql_test" # NPM Install MySQL 2. mysql-based package for MySQL connection and query:[Root@~/Wade/Nodejs/Nodebeginner/mysql_test]# cat Mysqltest.jsvar mysql = require(' MySQL '); var connection = Mysql.createconnection({Host

); Xhr.send (str); }node. JS:varHTTP = require (' http ');varQueryString = Require (' querystring '));varurl = require (' URL '));varUtil = require (' util ')); Http.createserver (function(req, res) {//Staging request body Information varBODY = ""; //Request LinkConsole.log (Req.url); //whenever the request body data is received, it is added to the postReq.on (' Data ',function(chunk) {body+ = chunk;//be sure to use + = if body=chunk, because th

time when a Web page or URL address is no longer cached by the browser, and once the time has passed, the browser should contact the original server. The expiration time for this setting is 1 years.Exports. Expires = { /^ (gif|png|jpg|js|css) $/IG, 60*60*24*365= { /css|js| html/= { "index.html"};Enumerates the types of various resources, which can be set according to the extension content-type.

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 share this with you for your reference. The details are as follows: Install related modul

Use node. js + mongodb to set up a simple login registration function. Preface Recently, I suddenly became interested in databases and the backend, and began to learn for a long time. I think I am only a front-end and only use java scopep, so I started to look at nodejs, looking at it, I suddenly found that mongodb and nodejs are better equipped !, Then I started my mongodb journey. I won't talk much about

Node. js remotely connects to the MongoDB database server on another host My MongoDB is installed in linux. First, add a user 1. First, run the terminal command line on the MongoDB server host and enter Mongo 2. Enter use admin to access the user management database. 3. db. addUser ("username", "password"); here, the username and password are the username and password you want to set. You can add a few more