express get req code example
Example 1: express hello world
//to run : node filename.js
const express = require('express')
const app = express()
const port = 3000
app.get('/', (req, res) => res.send('Hello World!'))
app.listen(port, () => console.log(`Example app listening at http://localhost:${port}`))
//visit localhost:3000
// assuming you have done 1) npm init 2) npm install express
Example 2: express redirect
res.redirect('/foo/bar')
res.redirect('http://example.com')
res.redirect(301, 'http://example.com')
res.redirect('../login')
Example 3: express route parameters
Route path: /users/:userId/books/:bookId
Request URL: http://localhost:3000/users/34/books/8989
req.params: { "userId": "34", "bookId": "8989" }
Example 4: 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) {
// ...
})