RESTful APIs using NodeJS and Express

index.js

const express = require('express');
const app = express();
const PORT = 3232;


// GET endpoint
app.get('/tshirt', (req, res) => {
    res.status(200).send({
        tshirt: '👕',
        size: 'large'
    })
});


// Middleware to parse JSON body
app.use( express.json() )


// POST endpoint
app.post('/tshirt/:id', (req, res) => {
    const { id } = req.params;
    const { logo } = req.body;

    if (!logo) {
        res.status(418).send({ message: 'We need a logo!' })
    }

    res.send({
        tshirt: `👕 with your ${logo}`,
    });

});


// Start the server
app.listen(
    PORT,
    () => console.log(`it's live on localhost:${PORT}`)
)

instructions.txt

1. npm init -y
2. npm install express
3. Create a javascript file named index.js and copy the contents of gist.
4. Execute `node .` in the terminal after saving the files.
5. Test using postman.