navigator.cookieEnabled returns a Boolean value that indicates whether cookies are enabled or not.
The property is read-only.
A boolean.
Note: Web browsers may prevent writing certain cookies in certain scenarios. For example, Chrome-based browsers, as well as some experimental version of Firefox, does not allow creating cookies with SameSite=None attribute, unless they are created over HTTPS and with Secure attribute.
if (!navigator.cookieEnabled) {
// The browser does not support or is blocking cookies from being set.
}