file.js

cleanUpOriginList(){
   var i;
   for (i = this.originList.length; i--;) {
      delete this.originList[i].id;
      delete this.originList[i].createdBy;
      delete this.originList[i].modifiedBy;
      delete this.originList[i].createdDate;
      delete this.originList[i].createdDate;
      delete this.originList[i].modifiedDate;
      if (this.originList[i].targetName === '') {
          this.originList.splice(i, 1);
      }
   };
   this.originList.forEach(function(item, index) { item.destinationOrder = index+1; });
 }`