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Label:This article by Vikings (http://www.cnblogs.com/vikings-blog/) original, reprint please indicate. Thank you! I like to learn new knowledge with goals. So learn Nodejs process, do not like to see only boring grammar and concepts, like to do some practical application of things. This writing out of the code more ground gas, while writing edge learning can avoid learning fatigue, is considered entertaining. So in the fourth session, I started try
Easy creation of nodejs servers (1): A simple nodejs server example, nodejs Server Let's first implement a simple example, hello world. It seems that the first section of each language tutorial will talk about this, and we are no exception. First, create a project directo
Example of implementing the sleep function in nodejs This article describes how to implement the sleep function in nodejs. This article describes the development process and performance testing of the sleep function. For more information, see Nodejs is most uncomfortable with its single-threaded features, which canno
because the express version of the reason for the upgrade, the book is a lot of code can not be used, this for beginners, it is really painful experience!! In the spirit of sharing and learning, I hereby offer the NODEJS Development Guide microblogging example express4.x version of the source code and the preparation process need to pay attention to the problem. First we look at the current Express versio
, the performance can be improved by speedup times. Amdahl's law describes what parallel can do and cannot do. It is an ideal situation, and the actual situation is much more complicated. For example, concurrency is likely to cause resource competition, and various locks need to be added, so that concurrency is often in the waiting state. concurrency also brings the time overhead of the operating system for thread scheduling switching, add Ws. However
Cause Someone asked, "What if you use Nodejs to access SQL Server?" ” Looking for information, found that there are two types of solutions, using Third-party Nodejs plug-ins: Https://github.com/orenmazor/node-tds, using Adodb.connectionactivex objects. Reference: Http://stackoverflow.com/questions/857670/how-to-connect-to-sql-server-database-from-javascript Http://stackoverflow.com/questions/4728385/connect
, the performance can be improved by speedup times. Amdahl's law describes what parallel can do and cannot do. It is an ideal situation, and the actual situation is much more complicated. For example, concurrency is likely to cause resource competition, and various locks need to be added, so that concurrency is often in the waiting state. Concurrency also brings the time overhead of the operating system for Thread Scheduling switching, add Ws. However
has been dedicated to front-end development, in recent days, began to learn the Nodejs. As a front-end developer, it is very exciting to see such a background written in JavaScript. However, backstage is different from the front end, in the process of learning, or will encounter a lot of problems. In order to start learning Nodejs, a first choice of "Simple Nodejs
Preface: 工欲善其事, its prerequisite. The module system is the NODEJS organization manages the code the Sharp weapon also calls the third party code the way, this article will explain the Nodejs module system in detail. In the last example of the article Analysis of Exprots and Module.exprots.Modules for NodejsWhat is a module?node. JS introduces the module concept b
Install Nodejs:Yum Install NodejsRun the node command to see if the installation was successful:You can see the successful entry to the command line and the installation is successful.The node command is preceded by a dot, using. Help to see which commands are available:Use. Exit to exit.Installing the NODEJS Package management tool NPM:Yum Install NPMTo install a package in Nodejs using NPM:When installing
App.js as follows://App.jsvarApp = require (' Express ')();varHTTP = require (' http '). Server (app);varIO = require (' Socket.io ') (HTTP); App.get (‘/‘,function(req, res) {Res.sendfile (' Index.html ');}); Io.on (' Connection ',function(socket) {Console.log (' A user connected '); Socket.on (' Disconnect ',function() {Console.log (' User disconnected '); }); Socket.on (' Chat message ',function(msg) {Console.log (' Message: ' +msg); Io.emit (' Chat message ', MSG); });}); App.set (' Por
has been dedicated to front-end development, in recent days, began to learn the Nodejs. As a front-end developer, it is very exciting to see such a background written in JavaScript. However, backstage is different from the front end, in the process of learning, or will encounter a lot of problems. In order to start learning Nodejs, a first choice of "Simple Nodejs
, anyway, the goods also have a very strong place, the disadvantage is not suitable forDataConsistencyHigh demand, such as financial development. But the advantage iscome on .Summary: This means that node and MongoDB combine to be particularly suitable for a scenario- fast, high -throughput situations. Let's start with the preparatory work: (Take the windows8.1 system environment as an example) 1.node: First download the installation
implementFirst need to install NODEJS environment, related file downloadAfter the download, after the installation, in the C-drive will appear Nodejs related directoryOK, let's take a look at how to implement the Request.QueryString function, that is, the function of the GET request, the relevant code is as follows:varQS = require (' querystring ');varHTTP = require (' http ');varFormidable = require (' fo
Nodejs is a simple encapsulation operation example for connecting to the sqlserver database based on the mssql module, nodejssqlserver This example describes how to connect node. js to an SQL Server database based on the mssql module. We will share this with you for your reference. The details are as follows: Note: To enable the SQL Server to allow remote connect
NodeJS simple WebSocket function example, nodejswebsocket The example in this article describes the simple WebSocket function of NodeJS. We will share this with you for your reference. The details are as follows: Based onExpressAndSocket. ioFirst, we need to install the following package npm install --save expressnpm i
Nodejs implements a method example for parsing an xml string as an object, nodejsxml This example describes how to parse xml strings as objects in nodejs. We will share this with you for your reference. The details are as follows: var xmlreader = require("xmlreader");var fs = require("fs");var xml_string = ' Nothing no
//console.log ("Hello World");varHttp=require ("http");varServer=http.createserver (function(request,response) {console.log (Request.method); Console.log (Request.url); if(request.method=== "GET") {Response.setheader ("Content-type", "text/html"); Response.setheader ("Content-encoding", "UTF8");//UTF8 Encoding varHtml= "";//HTML code Switch(request.url) { Case"/": Case"/index.html": HTML= "//UTF8 Encoding" ; Break; Case"/add.html": HTML= "//UTF8 E
Gen.js#!/usr/bin/env nodevarprogram = require (' Commander '); Program. Version (' 0.0.1 '). Option ('-C,--chdir ). Option ('-C,--config ). Option ('-T,--no-tests ', ' Ignore Test hook '). Option ('-P,--peppers ', ' Add peppers '). Option ('-P,--pineapple ', ' Add pineapple '). Option ('-B,--bbq-sauce ', ' Add BBQ sauce '). Option ('--p,--fuck-you ', ' fuckyou '). Option (' Build--env ). Parse (PROCESS.ARGV);if(program.peppers) Console.log ('-peppers '));if(program.pineapple) Console.log ('-pine
Label:Database operationsMongoUse TEST3;Db.users.insert ({"Name": "AAA", "Email": "[email protected]"});Nodejs Code WritingCreate a new test3 directory and edit the following file:Package.json{ "name": "Application-name", "version": "0.0.1", true, "Scripts": { "start": "Node App.js" }, "dependencies": { " Express ":" 3.4.4 ", " Jade ":" * ", " MongoDB ":" * ", " Monk ":" * " }}App.jsvarExpress =
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