Merge branch 'hotfix-weixin-wangcz' into dev

app.html

@@ -91,18 +91,18 @@
 
   document.getElementById("weChatBtn").addEventListener('click', function() {
     setTimeout(function() {
-      let url = window.location.search
-      let request = {}
+      var url = window.location.search
+      var request = {}
       if (url.indexOf('?' !== -1)) {
-        let str = url.substr(1)
-        let strs = str.split('&')
-        for (let i = 0; i < strs.length; i++) {
+        var str = url.substr(1)
+        var strs = str.split('&')
+        for (var i = 0; i < strs.length; i++) {
           request[strs[i].split('=')[0]] = decodeURI(strs[i].split('=')[1])
         }
       }
-      let appId = request['appId'] || ''
-      let returnUrl = request['returnURL'] || ''
-      let baseUrl = request['baseUrl'] || ''
+      var appId = request['appId'] || ''
+      var returnUrl = request['returnURL'] || ''
+      var baseUrl = request['baseUrl'] || ''
       new WxLogin({
         id: 'login_container',
         appid: 'wx4511639d0a71b945',