node js web application

); // Output a String to the console once the server starts up, lew.us know everything// Starts up correctlyConsole. log ("Random Number Generator Running ..."); Start the application Put the above code into a file named "random. js. To start the application and run it (to create an HTTP server and listen to connections on port 80), enter the following command

Recently wanted to try to create a Web application using node. js on IBM Bluemix, so you need to build a dev test environment for node. JS Web locally.What is

. writeHead (200, {"Content-Type": "application/octet-stream "});} // res can add information for simple interaction. For example, you can modify the header information or the returned resource data fs. readFile (pathname, function (err, data) {res. end (data) ;}) ;}else {res. writehead( 404, {"Content-Type": "text/html"}); res. end ("404 Not Found ");}});}). listen (8085, "127.0.0.5"); // server port console. log ("server running at #: 8085 /"); Sta

Briefly introduce the function of this real-time web chat system, the first person to enter the system to fill in the name and e-mail address will get a system created by the URL address, you can send this address to another person, another person into the system can chat with you in real-time conversation. The main use of node. JS and Socket.io two libraries, in

ObjectiveThese days in order to familiarize yourself with the vue.js framework and the use of Webpack, you are ready to build a simple Web application that publishes and browses Markdwon. Originally wanted to use bash scripts and BusyBox httpd as a background service, but bash script parsing and generation of JSON is very inconvenient, and in the Java language and feel that deployment is not convenient, so

Objective These days in order to familiarize yourself with the vue.js framework and the use of Webpack, you are ready to build a simple Web application that publishes and browses Markdwon. Originally wanted to use bash scripts and BusyBox httpd as a background service, but bash script parsing and generation of JSON is very inconvenient, and in the Java language and feel that deployment is not convenient, so

Want to automatically grab some data from a webpage or turn a piece of data from a blog to a structured data?There is no ready-made API to fetch data?!! [emailprotected]#[emailprotected]#$ ... It doesn't matter how the Web crawl can be solved. What is Web crawling? You may ask ... Web crawling is the process of retrieving the contents of a

At the WinForm end, the tree menu is very useful to implement this is very convenient, so I think of the page into a tree menu. I chose dtree This tool, there are many ways to implement the Web page tree menu, but I think this is more useful, and the configuration is relatively simple, use on the start quickly. Dtree is pure JS, so do not import jar package, and configuration as long as in the

-oriented programmingBearcat provides aspect-oriented programming (AOP) support based on the core container, allowing the developer to define, method interceptors, and slice to solve even the business logic that needs to be separated.CharacteristicsLightweight containers* Dependency Injection (DI) implementation of control inversion (IoC) to manage POJOs* AOP-based declarative crosscutting logic* Consistent development and configurationSimplicity of* Simple metadata configuration and writing POJ

/* Accept all the default configurations. */2. Install ExpressNPM Install Express--save3. Installing Express-handlebarsNPM Install Express-handlebars--save4. Create a Server.jsvarExpress = require (' Express ');varApp =Express ();varExhbs = require (' Express-handlebars ')); App.engine (' Handlebars ', Exhbs ({' defaultlayout ': ' Main '}); App.set (' View engine ', ' handlebars '); App.get (‘/‘,function(req, res) {varLucknumber = Math.Round (Math.random () * 10); Res.render (' Index ', {lucknum

Linux uses node. js to establish a service instance that accesses static Web pagesFirst, install the environment that node. js needs to run.Second, create the node directory (/NODE/WWW)

first, establishing a simple Web server involves some basic points of node. JS:1. Request ModuleIn node. JS, the system provides a number of useful modules (you can, of course, write your own modules in JavaScript, which we'll explain in detail later), such as HTTP, URLs, an

for sending messages to the server.Use socket. io and nodejs to build a websocket Server Socket. io can not only build the websocket service of the client, but also support the websocket of the nodejs server.Install socket. io in nodejs Use the node plug-in management package and run the following command to install socket. io successfully. Npm install socket. io If there is no npm or windows users can use github to download socket. io and put it

Preface using Nodejs to build a Web server is a comprehensive introductory tutorial for node. js, because to complete a simple Web server, you need to learn some of the more important modules in Nodejs, such as: HTTP protocol module, file system, URL parsing module, path parsing module, and the 301 redirect problem, le

attributes:Firstchild,lastchild,nextsibling,previoussibling is supported under IESupported under Chrome and FF: firstelementchild,lastelementchild,nextelementsibling,previouselementsiblingIf compatibility is required, we can use short-circuit expressions:1Window.onload =function(){2 varAdiv = document.getElementsByTagName ("div" );3(adiv[2].previouselementsibling | | adiv[2].previoussibling). Style.color = ' Red ';4(adiv[1].nextelementsibling | | adiv[1].nextsibling). Style.color =

Web socket and Canvas are two cool features currently implemented in browsers. This tutorial briefly describes how the two work, and creates a real-time canvas Based on Node. js and Web socket. For simplicity, I will use CoffeeScript to write all the code. If you prefer to use traditional JavaScript, you just need to t

scripting language　　　　　　(3) Today's Web application design is much more complex, third-party Interface Application Interface (API) heavy interaction, the user simultaneously connected and real-time interaction　　Personal Understanding Web server (big guys do not like, do not spray):When the browser sends a request to t

Just read a small example in the node. JS document, which is a small example of writing a Web server with node. jsOn the code (*^▽^*)Helloworld.jsUse node. js to write a server Const http=require (' HTTP '); const hostname= ' 127.

KOA was created by Express's original squad and is committed to becoming a smaller, more expressive, and robust WEB framework. Writing Web applications using KOA, by combining different generator, eliminates the duplication of tedious callback function nesting and greatly improves the efficiency of error handling. KOA does not bind any middleware in the kernel method, it simply provides a lightweight and el

node. js BriefNodejs is a JavaScript runtime, the interpreter is written in C + +, based on the ChromeV8 engine, the event-driven, non-blocking I/O model. This series currently refers to the node. JS website, the Web Scott's node.