JAVASCRIPT

req body express

var bodyParser = require('body-parser')
var app = express()

// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false }))

// parse application/json
app.use(bodyParser.json())

req body express

export const app = express();
app.use(express.json());

expressjs req.body.parameters

app.get('/user/:id', (req, res) => {
  console.log(req.params.id) // "1234562134654"
})
or
app.get('/user/:user_id', (req, res) => {
  console.log(req.params.user_id) // "1234562134654"
})

express req body

app.post('/login', (req, res) => {
  console.log(req.body.email) // "user@example.com"
  console.log(req.body.password) // "helloworld"
})