Answers for "express doc"

express js server

const express = require('express');
const app = express();
const PORT = process.env.PORT || 3000;

app.get('/', (req, res) => {
  res.send('<h1>Some HTML</h1>');
  res.send('<p>Even more HTML</p>');
});

app.listen(PORT, () => console.log(`Server is listening on port ${PORT}`));

require express server.js

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

express

const express = require('express');
const cors = require('cors')//cors for own server connected with own
const app = express();
require("dotenv").config();//dotenv config
const port = process.env.PORT || 5000;

//Middleware
app.use(cors());
app.use(express.json());

app.get('/',(req,res) =>{
    res.send('Server is ok')
});

app.listen(port, () =>{
    console.log('Port is Ok');
})

express

const express = require('express')
const cors = require('cors')
const bodyParser = require('body-parser')
require('dotenv').config()
const ObjectId = require("mongodb").ObjectId;

const app = express()
app.use(cors())
app.use(express.json())
const port = process.env.PORT || 5000;

app.get('/', (req, res)=>{
    res.send('welcome to backend')
})

app.listen(port, () => {
    console.log(`App listening at localhost:${port}`);
})

express

Express.js, or simply Express, is a web application framework for Node.js,
released as free and open-source software under the MIT License.

It is designed for building web applications and APIs.
It has been called the de facto standard server framework for Node.js.

express

# You can run the application generator with the npx command (available in Node.js 8.2.0).
npx express-generator
# For earlier Node versions, install the application generator as a global npm package and then launch it:
npm install -g express-generator
# For example, the following creates an Express app named myapp. The app will be created in a folder named myapp in the current working directory and the view engine will be set to Pug:
express --view=pug myapp

   create : myapp
   create : myapp/package.json
   create : myapp/app.js
   create : myapp/public
   create : myapp/public/javascripts
   create : myapp/public/images
   create : myapp/routes
   create : myapp/routes/index.js
   create : myapp/routes/users.js
   create : myapp/public/stylesheets
   create : myapp/public/stylesheets/style.css
   create : myapp/views
   create : myapp/views/index.pug
   create : myapp/views/layout.pug
   create : myapp/views/error.pug
   create : myapp/bin
   create : myapp/bin/www
# Then install dependencies:
cd myapp
npm install
# On MacOS or Linux, run the app with this command:
DEBUG=myapp:* npm start
# On Windows Command Prompt, use this command:
set DEBUG=myapp:* & npm start
# On Windows PowerShell, use this command:
$env:DEBUG='myapp:*'; npm start