How to read cookie in jquery

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C#

jQuery

I have a Online Q/A web application,i want to set count down for each candidate,i want to use cookie for each candidate that store count down value,and expiry after three mints, i have wrote cookie using following code,
i want a jquery code to read this code and display a counter,and after finishing time durtion,redirect user to Result.aspx page, the reason of using cookie because simple jquery count down reset on page refresh.

What I have tried:

HttpCookie candcookie = new HttpCookie("candcookie");
               Response.Cookies["candcookie"]["RollNumber"] = cnic;
               Response.Cookies["candcookie"]["time"] = DateTime.Now.ToString();
               candcookie.Expires = DateTime.Now.AddMinutes(3);
               Response.Cookies.Add(candcookie);