Javascript code
function SetCookie(cookieName, cookieValue, nDays) {
var today = new Date();
var expire = new Date();
if (nDays == null || nDays == 0) nDays = 1;
expire.setTime(today.getTime() + 3600000 * 24 * nDays);
document.cookie = cookieName + "=" + escape(cookieValue)
+ ";expires=" + expire.toGMTString();
}
ASP.Net code to get cookie
lblTitle.Text = Request.Cookies["key"].Value;