Javascript Set | create New cookie

set_cookie.js

// only name
document.cookie="username=John Doe";
// with expire date
document.cookie="username=John Doe; expires=Thu, 18 Dec 2013 12:00:00 UTC";
// with path to save the cookie
document.cookie="username=John Doe; expires=Thu, 18 Dec 2013 12:00:00 UTC; path=/";