update

app/_components/BackToTop.tsx

@@ -0,0 +1,33 @@
+"use client";
+import backTop from "@/app/_assets/backtop.png";
+import Image from "next/image";
+import { useScroll } from "ahooks";
+
+/**
+ * 返回到顶部
+ * @constructor
+ */
+const BackToTop = () => {
+  const position = useScroll();
+  return (
+    <div
+      className={`fixed bottom-4 right-10 h-[50px] w-[50px] overflow-hidden`}
+    >
+      <Image
+        onClick={() => {
+          window.scroll({
+            top: 0,
+            behavior: "smooth",
+          });
+        }}
+        className={`${
+          (position?.top ?? 0) > 100 ? "top-0" : "top-full"
+        } absolute left-0 h-full w-full cursor-pointer transition-all`}
+        src={backTop}
+        alt={""}
+      />
+    </div>
+  );
+};
+
+export default BackToTop;