diff --git a/src/base/attribute/1.index.md b/src/base/attribute/1.index.md
index 5836ff83..1480ed63 100644
--- a/src/base/attribute/1.index.md
+++ b/src/base/attribute/1.index.md
@@ -123,10 +123,4 @@ ol.proj.transform(
   "EPSG:3857",
   "EPSG:4326"
 );
-```
-
-<script>
-window.onload = function() {
-  alert(1)
-};
-</script>
+```
\ No newline at end of file