From 8ae2bd3552aec5a7062809ba998e9dd23c552fb2 Mon Sep 17 00:00:00 2001
From: DaleStack <211448639+DaleStack@users.noreply.github.com>
Date: Fri, 1 Aug 2025 03:21:28 +0800
Subject: [PATCH] Add scroll-to-top button that appears after scrolling 300px

---
 docs/_static/scrolltop.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/docs/_static/scrolltop.js b/docs/_static/scrolltop.js
index 7f0d8281..e9c5abd4 100644
--- a/docs/_static/scrolltop.js
+++ b/docs/_static/scrolltop.js
@@ -1,3 +1,6 @@
+// Injects a scroll-to-top button that appears after scrolling down 300px.
+// When clicked, it smoothly scrolls the page back to the top.
+
 window.addEventListener("scroll", function () {
   const btn = document.getElementById("scrollToTop");
   btn.style.display = window.scrollY > 300 ? "block" : "none";