How do I implement sessions in Express.js?

How do I implement sessions in Express.js?

To implement sessions in Express.js, you can use the express-session middleware. First, install it using npm.

What do I need to install for that?

You need to run npm install express-session in your project directory.

Can you show me a basic example of how to set it up?

Sure! Here's a simple setup:

const express = require('express');
const session = require('express-session');

const app = express();

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

app.get('/', (req, res) => {
  req.session.views = (req.session.views || 0) + 1;
  res.send(`Number of views: ${req.session.views}`);
});

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