preface

Create a back-end service using Express

Create a folder

You can create files and folders by right clicking or by using create commands

1.mkdir express

2.touch index.js

Write code to create back-end services

/*
 * @Author: Vinc
 * @Date: 2021-05-06 09:31:03
 * @LastEditTime: 2021-05-06 09:34:04
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: \express\index.js
 */

let express = require('express');

let app = express();

app.get('/', (req, res) => {
    res.send('Hello World');
})

app.listen(3000, () => {
    console.log('service start:', 'http://localhost:3000')
})

Copy the code

Start the process

1. Access the root directory NPM I or CNPM I express-s // Local dependency

2. After downloading the dependency node index.js

3. Open localhost:3000 in the browser

The above is a simple back-end service implementation, we can also try, creation is not easy, thank you for watching