Simple Hello Word using http in node

hello_world_c9_node.js

var http = require("http");
var server = http.createServer(function(request, response) {
  response.writeHead(200, {"Content-Type": "text/html"});
  response.write("<h1>Hello World</h1>");
  response.end();
});

server.listen(8080);
console.log("Server is listening");