backend is an express api code example
Example 1: node.js express
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 2: express js
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.