static-server.js

// node static-server.js

var http = require('http');
var fs = require('fs');
var path = require('path');
var port = 4000;

http.createServer(function (request, response) {
    console.log('request starting...');

    var filePath = '.' + request.url;
    if (filePath == './')
        filePath = './index.html';

    var extname = path.extname(filePath);
    var contentType = 'text/html';
    switch (extname) {
        case '.js':
            contentType = 'text/javascript';
            break;
        case '.css':
            contentType = 'text/css';
            break;
        case '.json':
            contentType = 'application/json';
            break;
        case '.png':
            contentType = 'image/png';
            break;
        case '.jpg':
            contentType = 'image/jpg';
            break;
        case '.wav':
            contentType = 'audio/wav';
            break;
    }

    fs.readFile(filePath, function (error, content) {
        if (error) {
            if (error.code == 'ENOENT') {
                fs.readFile('./404.html', function (error, content) {
                    response.writeHead(200, {'Content-Type': contentType});
                    response.end(content, 'utf-8');
                });
            }
            else {
                response.writeHead(500);
                response.end('Sorry, check with the site admin for error: ' + error.code + ' ..\n');
                response.end();
            }
        }
        else {
            response.writeHead(200, {'Content-Type': contentType});
            response.end(content, 'utf-8');
        }
    });

}).listen(port);
console.log('Server running at http://localhost:' + port + '/\nCTRL + C to shutdown');