Express.js req.cookies Property
The req.cookies property is used when the user is using cookie-parser middleware. This property is an object that contains cookies sent by the request.
Syntax:
req.cookies
Parameter: No parameters.
Return Value: Object
Installation of express module:
- You can visit the link to Install express module. You can install this package by using this command.
npm install express
- After installing the express module, you can check your express version in command prompt using the command.
npm version express
- After that, you can just create a folder and add a file for example, index.js. To run this file you need to run the following command.
node index.js
Example 1: Filename: index.js
var cookieParser = require( 'cookie-parser' ); var express = require( 'express' ); var app = express(); var PORT = 3000; app.use(cookieParser()); app.get( '/' , function (req, res) { req.cookies.title= 'GeeksforGeeks' ; console.log(req.cookies); res.send(); }); app.listen(PORT, function (err){ if (err) console.log(err); console.log( "Server listening on PORT" , PORT); }); |
Steps to run the program:
- The project structure will look like this:
- Make sure you have installed express and cookie-parser module using the following command:
npm install express npm install cookie-parser
- Run index.js file using below command:
node index.js
Output:
Server listening on PORT 3000
- Now open your browser and go to http://localhost:3000/, now you can see the following output on your console:
Server listening on PORT 3000 [Object: null prototype] { title: 'GeeksforGeeks' }
Example 2: Filename: index.js
var cookieParser = require( 'cookie-parser' ); var express = require( 'express' ); var app = express(); var PORT = 3000; app.use(cookieParser()); app.get( '/user' , function (req, res) { req.cookies.name= 'Gourav' ; req.cookies.age=12; console.log(req.cookies); res.send(); }); app.listen(PORT, function (err){ if (err) console.log(err); console.log( "Server listening on PORT" , PORT); }); |
Run index.js file using below command:
node index.js
Output: Now open your browser and make GET request to http://localhost:3000/user, now you can see the following output on your console:
Server listening on PORT 3000 [Object: null prototype] { name: 'Gourav', age: 12 }
Reference: https://expressjs.com/en/4x/api.html#req.cookies
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