The jrReadCookie() javascript function allows you to retrieve a browser cookie set by the jrSetCookie() javascript function .
The structure is jrReadCookie(name) so an example to set one would be
var ck = jrReadCookie('dash_reload');
The value of ck in the example above would be whatever was set by the jrSetCookie() function, you can use it however you like.
To delete a cookie, use the jrEraseCookie() javascript function