Update app.py

app.py

@@ -21,15 +21,9 @@ with gr.Blocks(theme='gradio/seafoam') as demo:
             dropdown.render()
             toggle_dark = gr.Button(value="Toggle Dark")
 
-    dropdown.change(None, dropdown, None, _js=js)
+    dropdown.change(None, dropdown, None)
     toggle_dark.click(
-        None,
-        _js="""
-        () => {
-            document.body.classList.toggle('dark');
-            document.querySelector('gradio-app').style.backgroundColor = 'var(--color-background-primary)'
-        }
-        """,
+        None
     )
 
     name = gr.Textbox(