Category: nodejs

https://github.com/hexojs/hexo
https://hexo.io/docs/
https://zhuby1973.github.io/2020/07/30/HowToUseHexo/
https://pages.github.com/

1. Head over to GitHub and create a new repository named username.github.io, where username is your username (or organization name) on GitHub.

2. install nodejs and npm on Ubuntu
   sudo apt install nodejs npm

3. install hexo and setup

   npm install hexo-cli -g
   hexo init zhuby1973.github.io
   cd zhuby1973.github.io
   npm install
   hexo clean
   hexo g
   hexo s
   hexo new "My New Post"
   npm install hexo-deployer-git --save

4. edit _config.yml in zhuby1973.github.io
   update below lines:
   url: https://zhuby1973.github.io/
   ……
   deploy:
   type: git
   repo: https://github.com/zhuby1973/zhuby1973.github.io.git
   branch: master

5. hexo deploy
   input your github username and password, you can see your new blog on GitHub Pages
   

npm init –yes
npm i express
npm i -g nodemon
npm install –save express@4.16.3 mysql@2.15.0 body-parser@1.18.2
you can get version info from https://www.npmjs.com/package/body-parser
https://www.npmjs.com/package/mysql

C:\Hans\first-app>nodemon index.js
[nodemon] 2.0.4
[nodemon] to restart at any time, enter rs
[nodemon] watching path(s): .
[nodemon] watching extensions: js,mjs,json
[nodemon] starting node index.js
Listening on port 3000
[nodemon] restarting due to changes…
[nodemon] starting node index.js
Listening on port 3000

C:\Hans\first-app>set PORT=5000 (on Linux use export PORT=5000)

Here is the code:

const express = require('express');
const app = express();

app.use(express.json());

const courses = [
    { id: 1, name: 'course1' },
    { id: 2, name: 'course2' },
    { id: 3, name: 'course3' },
];

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

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


app.post('/api/courses', (req, res) => {
    const course = {
        id: courses.length + 1,
        name: req.body.name
    };
    courses.push(course);
    res.send(course);
});


app.get('/api/courses/:id', (req, res) => {
   let course = courses.find(c => c.id === parseInt(req.params.id));
   if (!course) res.status(404).send('the id not found');
   res.send(course)
});

//port
const port = process.env.PORT || 3000;
app.listen(port, () => console.log(`Listening on port ${port}....`))