Set-Cookie add 2 cookies

Question

I have this class:

 var qs = require('querystring'); class Cookie { constructor(req, res) { this.req = req; this.res = res; } get(name) { if (this.has(name)) { var cookies = qs.parse(this.req.headers.cookie, '; ', '='); return cookies[name]; } return null; } set(name, value) { this.res.setHeader('Set-Cookie', `${name}=${value};`) } delete(name) { if (this.has(name)) { this.set(name, '') } } has(name) { if (typeof this.req.headers.cookie !== 'undefined') { const cookies = qs.parse(this.req.headers.cookie, '; ', '=') return typeof cookies[name] !== 'undefined'; } return false; } }

And then i try this:

 const http = require('http'); http.createServer((req, res) => { const cookie = new Cookie(req, res); cookie.set('name', 'Nikita') cookie.set('age', '13') res.setHeader('Content-Type', 'text/plain'); res.write('Now you have cookies') res.end() }).listen(8000)

Then i looked in "Edit This Cookie" and see only last cookie (age=13)

I think this is because there is a variable in the response, where cookies are stored and when I use Set-Cookie, it sets the value for this variable, but how can I get the variables that I added before?

Answer 1

There can be only one Set-Cookie header, and you are overriding its value each time you call cookie.set .

The correct approach is to keep a local string variable in the class, and append the new name=value pair to it each time you call cookie.set

class Cookie
{
    var cookieString = ""

    // ...

    set(name, value)
    {  
        if (cookieString) 
        { 
            cookieString += '; '
        }

        cookieString += `${name}=${value}`
        this.res.setHeader('Set-Cookie', cookieString)
    }

    //...
}