im fix

@@ -12,6 +12,14 @@ import {api} from './store';
 import {RatingView, LeaveMSGView, OrderListView } from './view';
 import tip from 'plugin/tip';
 
+window.requestAnimFrame = (function() {
+    return window.requestAnimationFrame ||
+        window.webkitRequestAnimationFrame ||
+        function(callback) {
+            window.setTimeout(callback, 1000 / 60);
+        };
+}());
+
 var qs = require('yoho-qs');
 
 var socket = require('./socket-chat'),
@@ -168,17 +176,17 @@ var chat = {
             })
             .on('focus.chat.sendText', '.text-in', function() {
                 $('.menu').hide();
-                // resizeFooter();
 
-                setTimeout(()=>{
+                window.requestAnimFrame(() => {
                     $('#chat-footer')[0].scrollIntoView();
-                }, 0);
+                });
             })
             .on('keydown.chat.sendText', '.text-in', function(event) {
                 event.stopPropagation();
-                setTimeout(()=>{
+
+                window.requestAnimFrame(() => {
                     $('#chat-footer')[0].scrollIntoView();
-                }, 0);
+                });
 
                 if (event.which === 13) {
                     let val = $.trim(event.target.value);