设置默认IconList

src/views/Business/Ditdck/Docpre.vue

@@ -436,6 +436,9 @@ export default {
   },
   created: function () {
       var IconList = JSON.parse(sessionStorage.getItem("IconList"));
+      if(IconList == null){
+          IconList = ["invoice","receipt"];
+      }
       var list = [];
       for(let i = 0; i < IconList.length; i++){
           for(let j = 0; j < this.docgrdDataStore.length; j++){