diff --git a/lib/layui_plugins/okLayer/okLayer.js b/lib/layui_plugins/okLayer/okLayer.js
index 21c5ba1..8f99d2a 100644
--- a/lib/layui_plugins/okLayer/okLayer.js
+++ b/lib/layui_plugins/okLayer/okLayer.js
@@ -1,3 +1,4 @@
+"use strict";
 layui.define(["layer"], function (exports) {
     var $ = layui.jquery;
     var okLayer = {
diff --git a/lib/layui_plugins/okUtils/okUtils.js b/lib/layui_plugins/okUtils/okUtils.js
index f0c6fd1..c9dc1e2 100644
--- a/lib/layui_plugins/okUtils/okUtils.js
+++ b/lib/layui_plugins/okUtils/okUtils.js
@@ -1,3 +1,4 @@
+"use strict";
 layui.define("layer", function (exports) {
     var $ = layui.jquery;
     var okUtils = {