how to node js Step by steps

Here are the exact steps I just took to run the "Hello World" example found at http://nodejs.org/. This is a quick and dirty example. For a permanent installation you'd want to store the executable in a more reasonable place than the root directory and update your PATH to include its location.

1. Download the Windows executable here: http://nodejs.org/#download
2. Copy the file to C:\
3. Create C:\hello.js
4. Paste in the following content:

    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/');

1. Save the file
2. Start -> Run... -> cmd
3. c:

4. C:>node hello.js

   Server running at http://127.0.0.1:1337/
   

That's it. This was done on Windows XP.