require express server.js
const express = require('express')const app = express() app.get('/', function (req, res) { res.send('Hello World')}) app.listen(3000)require express server.js
const express = require('express')const app = express() app.get('/', function (req, res) { res.send('Hello World')}) app.listen(3000)expressjs server
// npm init
// npm i express
const express = require('express');
const server = express();
const PORT = 3000;
// Body parser
server.use(express.json());
// Homme page
server.get('/', (req, res) => {
return res.send("<h1 style='text-align: center;'>Hello,<br />from the Express.js server!</h1>");
})
// About page
server.get('/about', (req, res) => {
return res.send('<h2 style="text-align:center">About us</h2>');
})
// 404 page
server.use((req, res, next) =>{
res.status(404);
// respond with html page
if (req.accepts('html')) {
res.sendFile(__dirname + '/error404.html');
return;
}
// respond with json
else if (req.accepts('json')){
res.send({
status: 404,
error: 'Not found'
});
return;
}
// respond with text
else {
res.type('txt').send('Error 404 - Not found');
}
});
// Listening to the port
server.listen(PORT, () => {
console.log(`Server is running on port ${PORT}`);
});
// Running the server: node server.jsCopyright © 2021 Codeinu
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