fix: 修复 ES7+ 语法问题

src/web/staticres/common-module/vipsubscribe/js/area-three-sidebar-template.js

@@ -11,7 +11,7 @@ function getParam (name) {
   r = null;
   return context == null || context == '' || context == 'undefined' ? '' : context;
 }
- // 需要结合area-three-sidebar-template.js使用
+// 需要结合area-three-sidebar-template.js使用
 function getRandomString (len) {
   let randomString = ''
   if (len) {
@@ -290,8 +290,8 @@ var areaThreeSidebarComponent = {
               }
             } else if (cities.ProRemark === '直辖市') {
               // 直辖市，将区县放置到第二级
-              if(cities.city && Array.isArray(cities?.city)) {
-                var orgDistrict = cities?.city[0].area || []
+              if(cities.city && Array.isArray(cities.city)) {
+                var orgDistrict = cities.city[0].area || []
                 // 将区县数据取出，处理成新数组，放入城市
                 let districtChildren = orgDistrict.map(dItem => {
                   return {
@@ -302,7 +302,7 @@ var areaThreeSidebarComponent = {
                   }
                 })
                 provinceExp.children.push({
-                  city: provinceExp.name?.indexOf('市') > -1 ? provinceExp.name : provinceExp.name + '市',
+                  city: (provinceExp.name && provinceExp.name.indexOf('市') > -1) ? provinceExp.name : provinceExp.name + '市',
                   selected: false,
                   canSelected: true,
                   id: `ac-${getRandomString(8).toLowerCase()}`,
@@ -445,7 +445,7 @@ var areaThreeSidebarComponent = {
       // 所有二级市区遍历
       for(let refKey in this.secondRefNameObj) {
         var refName = this.secondRefNameObj[refKey]
-        var renderList = this.$refs[refName]?.renderList || []
+        var renderList = (this.$refs[refName] && this.$refs[refName].renderList) || []
 
         for (let i = 0; i < renderList.length; i++) {
           var parent = renderList[i]
@@ -530,7 +530,7 @@ var areaThreeSidebarComponent = {
       this.resetSelect()
       if (typeof state === 'object' && Object.keys(state).length > 0) {
         this.setSidebarState(state)
-        this.$refs[this.allCountryRefName]?.setParentLevel0State(false)
+        this.$refs[this.allCountryRefName] && this.$refs[this.allCountryRefName].setParentLevel0State(false)
       }
       // 重新计算parent数据统计
       firstSidebar.refreshAllChildrenState()
@@ -631,9 +631,10 @@ var areaThreeSidebarComponent = {
       }
       // 将全国选择重置掉
       if(this.allCountryRefName) {
-        this.$refs[this.allCountryRefName]?.setParentLevel0State(false)
+        this.$refs[this.allCountryRefName] && this.$refs[this.allCountryRefName].setParentLevel0State(false)
       }
-      var selectedNum = renderList?.filter(temp => temp._children_selectedCount > 0)?.length || 0
+      var tempList = renderList || []
+      var selectedNum = tempList.filter(temp => temp._children_selectedCount > 0).length || 0
       var result = {
         _children_selectedCount: selectedNum,
         _children_count: renderList.length - 1