text: const express = require('express');
  const app = express();
  const path = require('path');
  const router = express.Router();
  
  app.use(express.static('./'));
  
  router.get('/',function(req,res){
    res.sendFile(path.join(__dirname+'/index.html'));
    //__dirname : It will resolve to your project folder.
  });
  
  //add the router
  app.use('/', router);
  app.listen(process.env.port || 3000);
  
  console.log('Running at Port 3000');
  