switch to jquery as Liangzhifeng comments. code review by bikai

@@ -6,6 +6,7 @@
 var $ = require('jquery');
 
 var loading = require('../plugin/loading'),
+    tip = require('../plugin/tip');
     Hammer = require('yoho.hammer');
 
 var theOrderCode = document.getElementById('ordercode').value;
@@ -17,7 +18,7 @@ var appIconPosition = {
         baidu: '-2.7rem',
         weixin: '-1.2rem',
         QQ: '-5.4rem',
-        bank: '-4'
+        bank: '-4rem'
     };
 
 //隐藏微信分享选项
@@ -77,11 +78,11 @@ function callpay(orderCode) {
                         jsApiParameters = res.data.jsApiParameters;
                         jsApiCall(orderCode, jsApiParameters);
                     } else {
-                        alert('微信支付调取失败');
+                        tip.show('微信支付调取失败');
                     }
                 },
                 error: function() {
-                    alert('请刷新本页面，完成微信支付');
+                    tip.show('请刷新本页面，完成微信支付');
                 }
             });
     }
@@ -99,11 +100,11 @@ function isWXOpen() {
 }
 
 function hideWeChatPay() {
-    var payApps = document.getElementsByClassName('app');
+    var payApps = $('.app');
 
-    [].forEach.call(payApps, function(app, index) {
-        if (app.innerHTML.indexOf('微信') !== -1) {
-            app.parentNode.style.display = 'none';
+    payApps.each(function(idx, app) {
+       if ($(app).attr('id') === 'weixin') {
+           $(app).parent().css('display', 'none');
            return false;
        }
     });
@@ -117,18 +118,18 @@ function handleForWX() {
 
 
 function setAppIcon(el, position) {
-    el.style.backgroundPositionY = position;
+    $(el).css('background-position-y', position);
 }
 
 function loadIcon() {
-    var boxs = document.getElementsByClassName('box');
+    var boxs = $('.box');
     var div = null;
     var appid = null;
 
-    [].forEach.call(boxs, function(box, index) {
-        div = box.getElementsByClassName('icon')[0].getElementsByTagName('div')[0];
-        if (div) {
-            appid = box.getAttribute('id');
+    boxs.each(function(idx, box) {
+        div = $(box).find('.icon').find('div');
+        if (div.length > 0) {
+            appid = $(box).attr('id');
             if (appid !== 'alipay') {
                 setAppIcon(div, appIconPosition[appid]);
             }
@@ -137,9 +138,9 @@ function loadIcon() {
 }
 
 function showPage() {
-    var pageList = document.getElementsByClassName('payapp-list')[0];
+    var pageList = $('.payapp-list');
 
-    pageList.style.visibility = 'visible';
+    pageList.css('visibility', 'visible');
 }
 
 if (wxHammer) {

@@ -807,7 +807,7 @@ class HomeController extends AbstractAction
                 ),
             ),
             'orderCode' => $orderCode,
-            'hasWxShare' => strpos($this->_request->server('HTTP_USER_AGENT', ''), 'MicroMessenger') !== false
+            'hasWxShare' => strpos($this->server('HTTP_USER_AGENT', ''), 'MicroMessenger') !== false
         ));
     }