diff --git a/frontend/views/permissions/index.php b/frontend/views/permissions/index.php
index 4d8534e..c8918a6 100644
--- a/frontend/views/permissions/index.php
+++ b/frontend/views/permissions/index.php
@@ -104,7 +104,7 @@ use \common\libs\MyLib;
          //获取标题高度
          var c=$('.ibox-title').height();
          //获取table高度
-         var e=$("fixed-table-body").height();
+         var e=$(".fixed-table-body").height();
          console.log(e);
          var d=a-c-100;