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< p > Node.js is a platform built on < a
href="http://code.google.com/p/v8/">Chrome's JavaScript runtime< / a >
for easily building fast, scalable network applications. Node.js
uses an event-driven, non-blocking I/O model that makes it
lightweight and efficient, perfect for data-intensive real-time
applications that run across distributed devices.< / p >
< a href = "#download" class = "button" id = "downloadbutton" > Download< / a >
< a href = "api/" class = "button" id = "docsbutton" > Docs< / a >
< p class = "version" > __VERSION__< / p >
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< h2 > Node.js in the Industry< / h2 >
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< li class = "microsoft" > < img src = "http://nodejs.org/images/microsoft-logo.png" >
< p > Node gives Azure users the first end-to-end JavaScript
experience for the development of a whole new class of real-time
applications.
< br >
< a href = "http://blogs.msdn.com/b/interoperability/" > Claudio Caldato< / a >
< br >
< span > Principal Program Manager, Interoperability Strategy< / span > < / p > < / li >
< li class = "ebay" > < img src = "http://nodejs.org/images/ebay-logo.png" >
< p > Node’s evented I/O model freed us from worrying about locking
and concurrency issues that are common with multithreaded async
I/O.
< br >
< a href = "http://www.ebaytechblog.com/2011/11/30/announcing-ql-io/" > Subbu Allamarju< / a >
< br >
< span > Principal Member, Technical Staff< / span > < / p > < / li >
< li class = "linkedin" > < img src = "http://nodejs.org/images/linkedin-logo.png" >
< p > On the server side, our entire mobile software stack is
completely built in Node. One reason was scale. The second is
Node showed us huge performance gains.
< br >
< a href = "http://venturebeat.com/2011/08/16/linkedin-node/" > Kiran Prasad< / a >
< br >
< span > Director of Engineering, Mobile< / span > < / p > < / li >
< li class = "yahoo" > < img src = "http://nodejs.org/images/yahoo-logo.png" >
< p > Node.js is the execution core of Manhattan. Allowing
developers to build one code base using one language – that is
the nirvana for developers.
< br >
< a href = "http://developer.yahoo.com/blogs/ydn/posts/2011/11/yahoo-announces-cocktails-%E2%80%93-shaken-not-stirred/" > Renaud Waldura< / a >
< br >
< span > Sr. Product Manger, Cocktail< / span > < / p > < / li >
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< a href = "#" id = "download-close" > X< / a >
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< li > < a href = "http://nodejs.org/dist/__VERSION__/node-__VERSION__.msi" > Windows Installer< / a > < br > node-__VERSION__.msi< / li >
< li > < a href = "http://nodejs.org/dist/__VERSION__/node-__VERSION__.pkg" > Macintosh Installer< / a > < br > node-__VERSION__.pkg< / li >
< li id = "source" > < a href = "http://nodejs.org/dist/__VERSION__/node-__VERSION__.tar.gz" > Source Code< / a > < br > node-__VERSION__.tar.gz< / li >
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< li > < a href = "https://raw.github.com/joyent/node/__VERSION__/ChangeLog" > Change Log< / a > < / li >
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< li > < a href = "http://nodejs.org/dist/__VERSION__" > Other release files< / a > < / li >
< li > < a href = "https://raw.github.com/joyent/node/__VERSION__/LICENSE" > License< / a > < / li >
< li > < a href = "https://github.com/joyent/node" > Git Repository< / a > < / li >
< li > < a href = "https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager" > Installing
with a Package Manager< / a >
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< h2 > An example: Webserver< / h2 >
< p > This simple web server written in Node responds with "Hello World" for every request.< / p >
< pre >
var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello World\n');
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');< / pre >
< p > To run the server, put the code into a file < code > example.js< / code > and execute it with the < code > node< / code > program:< / p >
< pre class = "sh_none" >
% node example.js
Server running at http://127.0.0.1:1337/< / pre >
< p > Here is an example of a simple TCP server which listens on port 1337 and echoes whatever you send it:< / p >
< pre >
var net = require('net');
var server = net.createServer(function (socket) {
socket.write('Echo server\r\n');
socket.pipe(socket);
});
server.listen(1337, '127.0.0.1');< / pre >
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< h2 > Featured< / h2 >
< a href = "http://www.youtube.com/watch?v=jo_B4LTHi3I" > < img src = "http://nodejs.org/images/ryan-speaker.jpg" > < / a >
A guided introduction to Node
< h2 > Explore Node.js< / h2 >
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< li > < a href = "about/" class = "explore" > About< / a > < br > < span > Technical overview< / span > < / li >
< li > < a href = "http://search.npmjs.org/" class = "explore" > npm Registry< / a > < br > < span > Modules, resources and more< / span > < / li >
< li > < a href = "http://nodejs.org/api/" class = "explore" > Documentation< / a > < br > < span > API Specifications< / span > < / li >
< li > < a href = "http://blog.nodejs.org" class = "explore" > Node.js Blog< / a > < br > < span > Insight, perspective and events< / span > < / li >
< li > < a href = "community/" class = "explore" > Community< / a > < br > < span > Mailing lists, blogs, and more< / span > < / li >
< li > < a href = "logos/" class = "explore" > Logos< / a > < br > < span > Logo and desktop background< / span > < / li >
< li > < a href = "http://jobs.nodejs.org/" class = "explore" > Jobs< / a > < br > < ol class = "jobs" > <!-- JOBS --> <!-- JOBS --> < / ol > < / li >
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< li > < a href = "/community/" > Community< / a > < / li >
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< p > Copyright < a href = "http://joyent.com" > Joyent, Inc< / a > , Node.js is a < a href = "/trademark-policy.pdf" > trademark< / a > of Joyent, Inc. View < a href = "https://raw.github.com/joyent/node/__VERSION__/LICENSE" > license< / a > .< / p >
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