req res express code example
Example 1: express js params
app.get('/path/:name', function(req, res) { // url: /path/test
console.log(req.params.name); // result: test
});
// OR
app.get('/path', function(req, res) { // url: /path?name='test'
console.log(req.query['name']); // result: test
});
Example 2: 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 3: express redirect
res.redirect('/foo/bar')
res.redirect('http://example.com')
res.redirect(301, 'http://example.com')
res.redirect('../login')
Example 4: node js http request express
npm install [email protected]