server.js

var application_root = __dirname;
var express = require("express");
var path = require("path");
var mongojs = require('mongojs');
var session = require('express-session');
var app = express();
var databaseUrl = "mongodb://localhost:27017/server1";
var collections = ["things"];
var db = mongojs(databaseUrl, collections);
//var Kekule = require('kekule').Kekule;


app.use(session({
  secret: 'secret',
  resave: true,
  saveUninitialized: true
}));

app.configure(function() {
  app.use(express.bodyParser());
  app.use(express.methodOverride());
  app.use(app.router);
  app.use(express.static(path.join(application_root, "public")));
  app.use(express.errorHandler({
    dumpExceptions: true,
    showStack: true
  }));
  app.use(express.json());
  app.use(express.urlencoded({
    extended: true
  }));
  app.use(express.static(path.join(__dirname, 'static')));
});



app.get('/api', function(req, res) {
  res.send('Our Sample API is up...');
});

app.get('/getcontent', function(req, res) {
  res.header('Access-Control-Allow-Origin', '*')
  res.header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE")
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept")
  db.things.find('', function(err, data) {
    if (err || !data) console.log("No molecules found");
    else {
      res.writeHead(200, {
        'Content-Type': 'application/json'
      });
      str = '[';
      data.forEach(function(ent1) {
        str = str + '{ "name" : "' + ent1.name + '",' + '"ID" : "' + ent1._id + '",' + '"structure" : "' + ent1.structure + '"},' + '\n';
      });
      str = str.trim();
      str = str.substring(0, str.length - 1);
      str = str + ']';
      res.end(str);
    }
  });
});

app.post('/insertmolecule', function(req, res) {
  console.log("POST: ");
  res.header("Access-Control-Allow-Origin", "http://localhost");
  res.header("Access-Control-Allow-Methods", "GET, POST");
  res.writeHead(200, {
    'Content-Type': 'text/plain'
  });
  name = req.body.name;
  structure = req.body.structure;
  console.log(req.body);
  console.log(req.body.mydata);
  var jsonData = JSON.parse(req.body.mydata);
  console.log(jsonData.name);
  console.log(jsonData.structure);
  db.things.save({
    name: jsonData.name,
    structure: jsonData.structure
  }, function(err, saved) {
    if (err || !saved) res.end("M not saved");
    else res.end("M saved");
  });
});



app.listen(1212);