is it possible to change the extension of a cookie file using javascript?

is it possible to change the extension of a cookie fil开发者_开发技巧e using javascript ???

Depending on the browser, persistent cookies will be stored differently on the client computer. Some browsers might even store cookies in a database. Using javascript it is not possible to control this and most importantly you don't need to.

Cookies are managed by the browser. You have no direct access to the underlying file. It may not even saved in a file.