express redirect
res.redirect('/foo/bar')
res.redirect('http://example.com')
res.redirect(301, 'http://example.com')
res.redirect('../login')
express redirect
res.redirect('/foo/bar')
res.redirect('http://example.com')
res.redirect(301, 'http://example.com')
res.redirect('../login')
require express server.js
const express = require('express')const app = express() app.get('/', function (req, res) { res.send('Hello World')}) app.listen(3000)
express in node js
$ npm init --y //add the package.json file
$ npm install express --no-save
const express = require('express')
const app = express()
//cors to fix cors origin, body-parser to fix the post value on the server
const cors = require('cors');
const bodyParser = require('body-parser');
app.use(cors());
app.use(bodyParser.json());
const port = 3000
app.get('/', (req, res) => {
res.send('Hello World!')
})
router.get('/admin/:id?', (req, res) => {
let id = req.params.id;
}
app.post('/admin', (req, res) => {
const user = req.body.user;
res.send('Hello World!', user)
})
app.listen(port, () => {
console.log(`Example app listening at http://localhost:${port}`)
})
node express
npm install express --save
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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