Reading existing cookies

Cookies for a given host, represented as nsICookie2 objects, can be enumerated as such:

let enum = Services.cookies.getCookiesFromHost("");
while (enum.hasMoreElements()) {
  var cookie = enum.getNext().QueryInterface(Ci.nsICookie2);
  dump( + ";" + + "=" + cookie.value + "\n");

All cookies, regardless of host, can be enumerated using Services.cookies.enumerator rather than getCookiesFromHost().

The following code demonstrates how to set a cookie in Firefox.

Services.cookies.add("", "/cookie-path", "cookie_name", "cookie_value", is_secure, is_http_only, is_session, expiry_date);

See also