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Using HTTP cookies - HTTP | MDN

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A cookie (also known as a web cookie or browser cookie) is a small piece of data a server sends to a user's web browser. The browser may store cookies, create new cookies, modify existing ones, and send them back to the same server with later requests. Cookies enable web applications to store limited amounts of data and remember state information; by default the HTTP protocol is stateless. In this article we will explore the main uses of cookies, explain best practices for using them, and look at their privacy and security implications. Typically, the server will use the contents of HTTP cookies to determine whether different requests come from the same browser/user and then issue a personalized or generic response as appropriate. The following describes a basic user sign-in system: Cookies are mainly used for three purposes: In the early days of the web when there was no other option, cookies were used for general client-side data storage purposes. Modern storage APIs are now recommen

Using HTTP cookies - HTTP | MDN Skip to main content Skip to search Using HTTP cookies A cookie (also known as a web cookie or browser cookie) is a small piece of data a server sends to a user's web browser. The browser may store cookies, create new cookies, modify existing ones, and send them back to the same server with later requests. Cookies enable web applications to store limited amounts of data and remember state information; by default the HTTP protocol is stateless . In this article we will explore the main uses of cookies, explain best practices for using them, and look at their priv

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