Only switch to themes on buttons that have the theme class

Fixes #1649
rust-lang · Sep 14, 2021 · 4251d7a · 4251d7a
1 parent 93008cf
commit 4251d7a
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/src/theme/book.js b/src/theme/book.js
@@ -371,7 +371,14 @@ function playground_text(playground) {
     });
 
     themePopup.addEventListener('click', function (e) {
-        var theme = e.target.id || e.target.parentElement.id;
+        var theme;
+        if (e.target.className === "theme") {
+            theme = e.target.id;
+        } else if (e.target.parentElement.className === "theme") {
+            theme = e.target.parentElement.id;
+        } else {
+            return;
+        }
         set_theme(theme);
     });