node js express
basic server const express =require('express'); const app = express(); const PORT = 5000; app.get('/',(req,res)=>{ res.json({message: 'Welcome to the backend'}) }) app.listen(PORT ,()=>console.log(`Connected to ${PORT}`)
node js express
basic server const express =require('express'); const app = express(); const PORT = 5000; app.get('/',(req,res)=>{ res.json({message: 'Welcome to the backend'}) }) app.listen(PORT ,()=>console.log(`Connected to ${PORT}`)
node js express
// node js -> express -> basic example: static folder, 404 page const express = require('express'); const path = require('path'); const PORT = process.env.PORT || 5000; const app = express(); function error404(req, res) { res.status(404); if (req.accepts('html')) { res.sendFile(path.join(__dirname, 'public/errors/404.html')); return; } if (req.accepts('json')) { res.send({ status: 404, error: 'Not found' }); return; } res.type('txt').send('404 - Not found'); } app .use(express.static(path.join(__dirname, 'public'))) .use(error404) .listen(PORT, () => console.log(`Listening on ${ PORT }`));
require express server.js
const express = require('express')const app = express() app.get('/', function (req, res) { res.send('Hello World')}) app.listen(3000)
express render
// send the rendered view to the client res.render('index') // if a callback is specified, the rendered HTML string has to be sent explicitly res.render('index', function (err, html) { res.send(html) }) // pass a local variable to the view res.render('user', { name: 'Tobi' }, function (err, html) { // ... })
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