Using Cookies

How to use cookies

Now as we can send cookies, I'll show you an example of how to get that cookies from user and use it.

1. First let's create new file at /controllers/cookies name showCookies.js

   const ShowCookies = (req, res) => {
   	const cookies = req.cookies;
   	res.send(cookies);
   };
   
   module.exports = ShowCookies;
   

   
   

2. Also add the routes as /cookies/show in your cookiesRouter file.
3. Now try get the locahlost:4000/cookies/show
   

   
   
   

   Right now, you will see that the cookies you have isn't show on the response.
   
   
   
4. Install the cookie-parser by npm i cookie-parser and use it in the index.js as show:

   const express = require('express');
   const cookieParser = require('cookie-parser');
   
   const app = express();
   const port = 4000;
   
   app.use(cookieParser());
   
   app.get('/', (req, res) => res.send('Hello World!'));
   
   app.use('/cookies', require('./routes/cookies'));
   
   app.listen(port, () => console.log(`Server running on port ${port}`));
   

   
   

Now try send the request again and see what happen.

And now the cookies are shown as expected.

How to decode the JWT encoded key

As we encoded the Secure cookie but now, we need to use it we need a way to decode it.

1. First create a new file name decodeCookies.js in /controllers/cookies/

   const jwt = require('jsonwebtoken');
   
   const DecodeCookies = (req, res) => {
   	const cookies = req.cookies;
   	const secureCookie = cookies.myCookieButMorePrivate;
   
   	const secret = 'mySecret';
   	const decoded = jwt.verify(secureCookie, secret);
   
   	return res.send(decoded.value);
   };
   
   module.exports = DecodeCookies;