NodeSP (Node Server Pages) is a proof of concept on using Node.js as a web server serving dynamic content generated from .js scripts akin to PHP or other CGI scripts.

NodeSP v0.01.js

var http = require('http'),
    url  = require('url'),
    vm   = require('vm'),
	 fs   = require('fs');

// Process request and send response to client
exports.run = function(request, response) {
  var res = this.process(request);
	response.statusCode = res.statusCode||200;
	response.setHeader("Content-Type", res.contentType||"text/html");
	response.end(res.body);
}

// Process request and return response as object
exports.process = function(request) {

	request.url = url.parse(request.url, true);
	var filename = '.'+request.url.pathname;

	// Load .js script
	if (!fs.existsSync(filename)) return {statusCode: 404, body: 'Script not found!'};
	var jsCode = fs.readFileSync(filename);

	// Prepare context with request and response
	var context = {request: request, response: {}, console: console};

	try {
		
		// Run script
		vm.runInNewContext(jsCode, context);
	
	} catch(e) {
	  
	  context.response.statusCode = 500;
	  context.response.body = 'NodeSP error processing script : ' + e.message + '<pre>'
	                           + e.stack + '</pre>';
	
	}
   
	// Return response
	return context.response;
	
}

Put the above nodesp.js in your node_modules folder and then run the following nodespserver.js:

var http = require('http'),
    nsp  = require('nodesp');

http.createServer(function (req, res) {
    nsp.run(req, res);
}).listen('8111');

Finally create your test.js:

response.body = '<h1>Hello World!</h1>';

If you then call localhost:8111/test.js you should see "Hello World!" printed in large, friendly letters.