diff --git a/public/react/src/modules/courses/poll/PollNew.js b/public/react/src/modules/courses/poll/PollNew.js
index c95ff844e..c944da4ef 100644
--- a/public/react/src/modules/courses/poll/PollNew.js
+++ b/public/react/src/modules/courses/poll/PollNew.js
@@ -19,7 +19,7 @@ const CheckboxGroup = Checkbox.Group
 const Option = Select.Option;
 const maps = {1: "未发布", 2: "提交中", 3: "已截止"}
 const confirm = Modal.confirm;
-
+const $ = window.$;
 class PollNew extends Component {
 	// 问卷新建和编辑
 	//