Merge remote-tracking branch 'origin/feature/cookie' into release/0606

@@ -23,21 +23,14 @@ let _ChannelVary = {
 require('./common/share');
 
 function cookie(name) {
-    let cookies = document.cookie,
-        cookieVal;
+    var re = new RegExp(name + '=([^;$]*)', 'i'),
+        matchPattern = '$1';
 
-    if (cookies) {
-        cookies = cookies.split(';');
-
-        for (let i = 0; i < cookies.length; i++) {
-            if (cookies[i].indexOf(name) > -1) {
-                cookieVal = decodeURIComponent($.trim(cookies[i].replace(name + '=', '')));
-                break;
-            }
-        }
+    try {
+        return re.test(decodeURIComponent(document.cookie)) ? RegExp[matchPattern] : '';
+    } catch (e) {
+        return decodeURIComponent(re.test(document.cookie) ? RegExp[matchPattern] : '');
     }
-
-    return cookieVal;
 }
 
 function setCookie(name, value, options) {