diff --git a/.eslintrc b/.eslintrc
index 3fbfc3524..3269a3eae 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -14,7 +14,8 @@
     "Fix": true,
     "module": true,
     "Demo": true,
-    "_global": true
+    "_global": true,
+    "ActiveXObject": true
   },
   "parser": "@typescript-eslint/parser",
   "parserOptions": {
diff --git a/src/base/single/input/file.js b/src/base/single/input/file.js
index 4ea51047e..570526f36 100644
--- a/src/base/single/input/file.js
+++ b/src/base/single/input/file.js
@@ -251,7 +251,7 @@
         } else {
             // Internet Explorer, Opera, others
             sendFile = function (handler, maxSize, width, height) {
-                var current = handler.current;
+                var current = handler.current, iframe, form;
                 var url = handler.url.concat(-1 === handler.url.indexOf("?") ? "?" : "&", "AjaxUploadFrame=true"),
                     rpe = {
                         loaded: 1, total: 100, simulation: true, interval: setInterval(function () {
@@ -499,9 +499,9 @@
                 if (this.file.fileSize !== -1) {
                     // simulation property indicates when the progress event is fake
                     if (rpe.simulation) {
-
+                        // empty
                     } else {
-
+                        // empty
                     }
                 } else {
                     // if fileSIze is -1 browser is using an iframe because it does