example主题调整

themes/example/components/JumpToTopButton.js

@@ -0,0 +1,19 @@
+import { useGlobal } from '@/lib/global'
+import React from 'react'
+
+/**
+ * 跳转到网页顶部
+ * 当屏幕下滑500像素后会出现该控件
+ * @param targetRef 关联高度的目标html标签
+ * @param showPercent 是否显示百分比
+ * @returns {JSX.Element}
+ * @constructor
+ */
+const JumpToTopButton = () => {
+  const { locale } = useGlobal()
+  return <div title={locale.POST.TOP} className='cursor-pointer p-2 text-center' onClick={() => window.scrollTo({ top: 0, behavior: 'smooth' })}
+    ><i className='fas fa-angle-up text-2xl' />
+    </div>
+}
+
+export default JumpToTopButton