yas上报获取uid

@@ -110,7 +110,26 @@
         return vars;
     }
     
-    var uid = queryString().uid || 0;   
+    function getCookie(Name) {
+       var search = Name + "="
+       var value = "";
+       
+       if (document.cookie.length > 0) {
+         sd = document.cookie.indexOf(search);
+         if (sd!= -1) {
+            sd += search.length;
+            end = document.cookie.indexOf(";", sd);
+            if (end == -1)
+             end = document.cookie.length;
+             //unescape() 函数可对通过 escape() 编码的字符串进行解码。
+            value=unescape(document.cookie.substring(sd, end))
+          }
+       } 
+       return value;
+    }
+    
+    var uid = getCookie('uid') || queryString().uid || 0; 
+      
     window._ozuid = uid; // 暴露ozuid
     if (window._yas) {
        window._yas(1 * new Date(), '2.4.18', 'yohobuy_m', uid, '', '');