fix: handle response is null to empty array

pages/index/index.js

@@ -43,6 +43,7 @@ Page({
   },
   // 获取首页信息
   initIndexData (pullDownRefresh = false) {
+    var that = this
     wx.showLoading({
       title: '加载中...',
       mask: true
@@ -52,11 +53,11 @@ Page({
       if (pullDownRefresh) {
         wx.stopPullDownRefresh()
       }
-      var response = hoemRes.data.documentVos
+      var response = hoemRes.data.documentVos || []
       response.map(item => {
         item.birthDay = item.birthday.split(' ')[0]
       })
-      this.setData({
+      that.setData({
         useNumber: hoemRes.data.useNumber,
         documentVos: response
       })