bug fix

card/assets/styles/card-design.scss

@@ -230,6 +230,19 @@
   background-color: $--color-text-dark;
   overflow: hidden;
   padding: 10px 20px 10px 260px;
+  text-align: right;
+
+  .design-back {
+    display: inline-block;
+    line-height: 30px;
+    font-size: 16px;
+    color: #fff;
+    cursor: pointer;
+
+    &:hover {
+      color: $--color-danger;
+    }
+  }
 
   .design-steps {
     position: relative;

src/modules/exam/components/createExamAndPrintTask/ModifyExamStudent.vue

@@ -79,7 +79,9 @@
     </el-row>
 
     <div slot="footer">
-      <el-button type="primary" @click="submit">确认</el-button>
+      <el-button type="primary" :disabled="loading" @click="submit"
+        >确认</el-button
+      >
       <el-button @click="cancel">取消</el-button>
     </div>
   </el-dialog>
@@ -137,6 +139,7 @@ export default {
       userTree: [],
       selectedUsers: [],
       filterLabel: "",
+      loading: false,
       defaultProps: {
         children: "children",
         label: "label",
@@ -337,6 +340,9 @@ export default {
         this.$message.error("请选择考试对象");
         return;
       }
+
+      if (this.loading) return;
+      this.loading = true;
       this.selectedExamObjectType = this.examObjectType;
       const selectedUsers = this.showStudent
         ? this.selectedUsers
@@ -346,6 +352,9 @@ export default {
         selectedStudents: selectedUsers,
         isSelectStudent: this.showStudent,
       });
+      setTimeout(() => {
+        this.loading = false;
+      }, 500);
       this.cancel();
     },
   },