scroll...

packages/frontend/src/scripts/scroll.ts

@@ -83,6 +83,19 @@ export function scroll(el: HTMLElement | null, options: ScrollToOptions | undefi
 	}
 }
 
+/**
+ * コンテナを指定してscrollByする
+ * @param el Container element
+ * @param options ScrollToOptions
+ */
+export function scrollBy(el: HTMLElement | null, options: ScrollToOptions | undefined) {
+	if (el == null) {
+		window.scrollBy(options);
+	} else {
+		el.scrollBy(options);
+	}
+}
+
 /**
  * Scroll to Top
  * @param el Scroll container element