Synopsis Node.js v4.4.2 Manual & Documentation

Node.js (1)

- About these Docs
- Synopsis
- Assertion Testing
- Buffer
- C/C++ Addons
- Child Processes
- Cluster
- Command Line Options
- Console
- Crypto
- Debugger
- DNS
- Domain
- Errors
- Events
- File System
- Globals
- HTTP
- HTTPS
- Modules
- Net
- OS
- Path
- Process
- Punycode
- Query Strings
- Readline
- REPL
- Stream
- String Decoder
- Timers
- TLS/SSL
- TTY
- UDP/Datagram
- URL
- Utilities
- V8
- VM
- ZLIB

# Synopsis#

An example of a web server written with Node.js which responds with `'Hello World'`:

    const http = require('http');

    http.createServer( (request, response) => {
      response.writeHead(200, {'Content-Type': 'text/plain'});
      response.end('Hello World\n');
    }).listen(8124);

    console.log('Server running at http://127.0.0.1:8124/');

To run the server, put the code into a file called `example.js` and execute it with the node program

    $ node example.js
    Server running at http://127.0.0.1:8124/

All of the examples in the documentation can be run similarly.