node.js

const express = require('express');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');

const app = express();

// Connect to MongoDB
mongoose.connect('mongodb://127.0.0.1:27017/notesDB', {
  useNewUrlParser: true,
  useUnifiedTopology: true
});

// Define Schema
const noteSchema = new mongoose.Schema({
  title: String,
  content: String,
  createdAt: { type: Date, default: Date.now }
});

const Note = mongoose.model('Note', noteSchema);

// Middleware
app.use(bodyParser.urlencoded({ extended: true }));
app.set('view engine', 'ejs');
app.use(express.static('public'));

// Routes

// Home - list all notes
app.get('/', async (req, res) => {
  const notes = await Note.find();
  res.render('index', { notes });
});

// Add new note
app.post('/add', async (req, res) => {
  const newNote = new Note({
    title: req.body.title,
    content: req.body.content
  });
  await newNote.save();
  res.redirect('/');
});

// Delete note
app.post('/delete', async (req, res) => {
  const noteId = req.body.noteId;
  await Note.findByIdAndDelete(noteId);
  res.redirect('/');
});

// Start server
app.listen(3000, () => {
  console.log('Server running on port 3000');
});