Files
jiang13-bbs/frontend/components/ReadingProgress.tsx
freefire 1eaf3903d4 feat: 新增大量社区功能与基础组件,优化站点整体体验
- 新增事件总线式toast通知系统
- 新增头像、阅读进度、404/500错误页等基础组件
- 重构页脚、布局、分页、点赞按钮等现有组件
- 新增用户个人页、通知中心、帖子编辑/发布/置顶/推荐管理功能
- 优化登录注册页面样式与交互
- 修复路径类型文件引用,更新站点元信息与字体配置
2026-09-12 04:30:02 +08:00

38 lines
1023 B
TypeScript

"use client";
import { useEffect, useState } from "react";
export default function ReadingProgress() {
const [progress, setProgress] = useState(0);
useEffect(() => {
let raf = 0;
const update = () => {
raf = 0;
const doc = document.documentElement;
const max = doc.scrollHeight - doc.clientHeight;
setProgress(max > 0 ? Math.min(1, doc.scrollTop / max) : 0);
};
const onScroll = () => {
if (!raf) raf = requestAnimationFrame(update);
};
update();
window.addEventListener("scroll", onScroll, { passive: true });
window.addEventListener("resize", onScroll);
return () => {
window.removeEventListener("scroll", onScroll);
window.removeEventListener("resize", onScroll);
if (raf) cancelAnimationFrame(raf);
};
}, []);
if (progress <= 0) return null;
return (
<div
className="reading-progress"
style={{ transform: `scaleX(${progress})`, opacity: progress >= 1 ? 0 : 1 }}
aria-hidden="true"
/>
);
}