start node express server 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: how to make an express server

// this is your code
// ZDev1#4511 on discord if you want more help!
// first you should install express in the terminal
// `npm i express`.
const express = require('express');
const app = express();

// route
app.get('/', (req,res)=>{
  // Sending This is the home page! in the page
  res.send('This is the home page!');
});

// Listening to the port
let PORT = 3000;
app.listen(PORT)

// FINISH!

Example 3: node express start code

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}`)
})

Example 4: require express server.js

const express = require('express')const app = express() app.get('/', function (req, res) {  res.send('Hello World')}) app.listen(3000)

Example 5: js express server

const http = require('http')
const express = require('express')

const app = express()
const server = http.Server(app)
app.set('port', 8888)
server.listen(8888)

app.get('/', (req, res) => {
  res.json({teste: true})
})