Why do you need a Cookie

Cookies are used to remember information about the user profile(such as username). It basically involves two steps,

1. When a user visits a web page, the user profile can be stored in a cookie.
2. Next time the user visits the page, the cookie remembers the user profile.

Practical Code Example

// Setting an HTTP-cookie or client cookie for session identification:
document.cookie = "sessionId=xyz987; Secure; SameSite=Strict; max-age=86400; path=/";

// Reading all available cookies
console.log(document.cookie); // "sessionId=xyz987"