Express.js

• using middleware
• neat req and res
• routing
• handle html pages

script

const app = express();
app.use((req, res, next) => {
	res.send();
	next();
});
 
app.listen(3000);
 
// router
const router = express.Router();
router.post('/product', (req, res, next) => {
 
});
 
app.use(productRoutes);
app.use((req, res, next) => {
 res.status(404).send('<h1>Page not found</h1>');
});
 
const path = require('path');
router.get('/', (req, res, next) => {
	res.sendFile(path.join(__dirname, 'views', 'shop.html'))
});
 
 

express implementation for server: call the listen method on the server object.

Q. How to add prefix to routes?

app.use(‘/admin’, adminRoutes)

send and sendFile method.

module.exports = path.dirname(require.main.filename)

Above gives the root file name which started the application. This works on alloperating_systems

Serving files statically

app.use(express.static(path.join(__dirname, ‘public’)))