express cookie parser

Environment setup:

npm init
npm install express --save
npm install cookie-parser --save

What are Cookies in express

• This is client-side data storage technique.
• Small data files
• Data sent back to the client from the server which stored in cookies.
• Cookie always sent to the server with each request.
• Also helps in session management.

How to implement Cookies in express

• Install middleware for cookie parser
• Npm install cookie-parse –save
• Create Cookies :

       res.cookie(‘cookiename‘, ‘cookievalue’)

Set Cookies with the expiration time

• res.cookie(cookiename, ‘value’, {expire: 360000 + Date.now()});
• Set Cookies expiration time using maxAge property.
• res.cookie(cookiename, ‘value’, {maxAge: 360000});

Deleting Cookies

res.clearCookie(cookiename’);

var express = require('Express');
// Pass reference of cookie parser
var cookieparser = require('cookie-parser');

var app = express();
app.use(cookieparser());
app.get("/", function(req, res){
    // Create cookie without expiration time 
//res.cookie('mycookie', 'yogesh sharma').send('Cookies has been set now');
// Set cookies with expiration time 
// res.cookie('mycookie2', "sharma", {expire : Date.now()+ 36000 }).send('cookie has been set');
// Set Cookies expiration using maxAge
res.cookie('mycookie3', "sharma", {maxAge :  36000 }).send('cookie has been set');


})
app.get("/showcookie", function(req, res){
    res.send(req.cookies);
    
    })
    app.get("/clearcookie", function(req, res){
     res.clearCookie('mycookie2').send('cookie has been deleted');
        
        })
    


app.listen(3000);