回调

@@ -18,7 +18,7 @@ var socket = require('./socket-chat'),
     cmEntity = socketConf.conversationMessage;
     cmEntity = socketConf.conversationMessage;
 
 
 const chatBox = $('#chat-window'),
 const chatBox = $('#chat-window'),
-      encryptedUid = $('#encrypteduid').val();
+    encryptedUid = $('#encrypteduid').val();
 
 
 const append = (html) => {
 const append = (html) => {
     chatBox.append(html);
     chatBox.append(html);
@@ -65,7 +65,7 @@ var chat = {
     },
     },
 
 
     // 获取10条历史记录
     // 获取10条历史记录
-    fetchHistoryMsg: function() {
+    fetchHistoryMsg: function(cb) {
         const self = this;
         const self = this;
 
 
         var data = {
         var data = {
@@ -82,6 +82,7 @@ var chat = {
                         self.getMessage(item);
                         self.getMessage(item);
                     }
                     }
                 }
                 }
+                cb();
             }
             }
         });
         });
     },
     },