Js Cookies

 1 function getCookie(name) {
 2     var arr = document.cookie.match(new RegExp("(^| )userInfo=([^;]*)(;|$)"));
 3     if (arr != null) {
 4         arr = unescape(arr[2]).split("&");
 5         for (x in arr)
 6             if (arr[x].split("=")[0] == name) {
 7                 return arr[x].split("=")[1];
 8             }
 9     }
10     else {
11         return "";
12     }
13 }
14 alert( getCookie("userName"))

 1 function getCookie(key, name) {
 2     var arr = document.cookie.match(new RegExp("(^| )" + key + "=([^;]*)(;|$)"));
 3     if (arr != null) {
 4         arr = unescape(arr[2]).split("&");
 5         for (x in arr) {
 6             if (arr[x].split("=")[0] == name) {
 7                 return arr[x].split("=")[1];
 8             }
 9         }
10     }
11     return "";
12 }
13 alert(getCookie("userInfo", "userName"))
14 alert(getCookie("userInfo", "lastVisit"))