Using simple JavaScript code, what can you detect with cookies?

Cookies are small pieces of data stored by a web browser that are specific to a particular domain. They are mainly used for various purposes, including session management, personalization, and tracking user behavior. When it comes to detecting information with cookies, one of the main data types you can gather is related to the user's browser type and version.

When a cookie is created, it can include details related to the environment it's in, such as the type of browser and its version. This is particularly useful for developers to tailor experiences or notify users about compatibility issues. For example, a website could use cookies to remember which version of a site you visited last and adjust functionality accordingly, based on the browser capabilities.

User login credentials can be stored in cookies, but this practice poses security risks and isn't a direct capability of cookies themselves. Similarly, while cookies cannot directly capture IP addresses, they might indirectly reflect usage patterns associated with a particular browser. Cookies cannot measure network speed, as they do not collect data about the user's internet connection. Hence, detecting browser type and version with cookies is both possible and common in web development practices.