static.js

var fs = require('fs');
var http = require('http');
var url = require('url');
var ROOT_DIR = "html/";
http.createServer(function (req, res) {
  var urlObj = url.parse(req.url, true, false);
  if(urlObj.pathname.indexOf("getcity") != -1) {
    console.log("In Getcity");
    fs.readFile("cities.dat.txt", function (err,data) {
      if (err) throw err;
      var cities = data.toString().split("\n");
      var myRe = new RegExp("^"+urlObj.query["q"]);
      console.log(myRe);
      var jsonresult = [];
      for (var i = 0; i < cities.length; i++) {
        var result = cities[i].search(myRe);
        if (result != -1) {
          console.log(cities[i]);
          jsonresult.push({city:cities[i]});
        }
       }
      console.log(jsonresult);
      res.writeHead(200);
      res.end(JSON.stringify(jsonresult));
    });
  } else {
  fs.readFile(ROOT_DIR + urlObj.pathname, function (err,data) {
    if (err) {
      res.writeHead(404);
      res.end(JSON.stringify(err));
      return;
    }
    res.writeHead(200);
    res.end(data);
  });
 }
}).listen(80);