修改bug

src/views/dashboard/index.vue

@@ -426,7 +426,7 @@ export default {
     submitUserForm() {
       //获取选中的节点
       let node = this.$refs.dept.getCurrentNode();
-      if (node == undefined || node == null) {
+      if (node === undefined || node === null) {
         this.$message({
           message: '请选择数据!',
           type: 'warning'