// ==UserScript==
// @name YouTube Recommendation History
// @name:zh-CN YouTube推荐内容回溯
// @namespace https://github.com/Kibidango086/YouTube-Recommendation-History/
// @version 1.7
// @description Save and review YouTube homepage recommendations to prevent losing interesting videos after an accidental refresh.
// @description:zh-CN 保存和回溯YouTube首页推荐内容，防止误点刷新后丢失想看的视频推荐
// @author Kibidang086
// @license MIT
// @match https://www.youtube.com/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
// 存储推荐历史的数组
let recommendationHistory = [];
let currentIndex = -1;
let isRestoring = false;
// 存储键名
const STORAGE_KEY = 'youtube_recommendation_history';
const INDEX_KEY = 'youtube_current_index';
// 创建前进按钮
function createForwardButton() {
const button = document.createElement('button');
button.innerHTML = `
<svg width="20" height="20" viewBox="0 0 24 24" fill="currentColor">
<path d="M12 4V1L8 5l4 4V6c3.31 0 6 2.69 6 6 0 1.01-.25 1.97-.7 2.8l1.46 1.46C19.54 15.03 20 13.57 20 12c0-4.42-3.58-8-8-8zm0 14c-3.31 0-6-2.69-6-6 0-1.01.25-1.97.7-2.8L5.24 7.74C4.46 8.97 4 10.43 4 12c0 4.42 3.58 8 8 8v3l4-4-4-4v3z"/>
</svg>
往后Next
`;
button.id = 'youtube-forward-btn';
applyButtonStyles(button);
return button;
}
// 创建后退按钮
function createBackwardButton() {
const button = document.createElement('button');
button.innerHTML = `
<svg width="20" height="20" viewBox="0 0 24 24" fill="currentColor">
<path d="M17.65 6.35C16.2 4.9 14.21 4 12 4c-4.42 0-7.99 3.58-7.99 8s3.57 8 7.99 8c3.73 0 6.84-2.55 7.73-6h-2.08c-.82 2.33-3.04 4-5.65 4-3.31 0-6-2.69-6-6s2.69-6 6-6c1.66 0 3.14.69 4.22 1.78L13 11h7V4l-2.35 2.35z"/>
</svg>
往前Prev
`;
button.id = 'youtube-backward-btn';
applyButtonStyles(button);
return button;
}
function applyButtonStyles(button) {
const isDark = isDarkMode();
const lightTheme = {
background: '#f1f1f1',
border: '#d3d3d3',
color: '#0f0f0f',
hoverBg: '#e5e5e5',
hoverBorder: '#c6c6c6',
activeBg: '#d9d9d9'
};
const darkTheme = {
background: '#303030',
border: '#4a4a4a',
color: '#ffffff',
hoverBg: '#3a3a3a',
hoverBorder: '#5a5a5a',
activeBg: '#2a2a2a'
};
const theme = isDark ? darkTheme : lightTheme;
button.style.cssText = `
display: flex;
align-items: center;
gap: 8px;
background: ${theme.background};
border: 1px solid ${theme.border};
border-radius: 18px;
padding: 8px 16px;
font-size: 14px;
font-weight: 500;
color: ${theme.color};
cursor: pointer;
transition: all 0.2s ease;
font-family: "Roboto", sans-serif;
white-space: nowrap;
margin: 0 4px;
`;
// 移除旧事件，避免重复绑定（可选）
button.onmouseenter = () => {
button.style.background = theme.hoverBg;
button.style.borderColor = theme.hoverBorder;
};
button.onmouseleave = () => {
button.style.background = theme.background;
button.style.borderColor = theme.border;
};
button.onmousedown = () => {
button.style.background = theme.activeBg;
};
button.onmouseup = () => {
button.style.background = theme.hoverBg;
};
}
// 从localStorage加载历史记录
function loadHistoryFromStorage() {
try {
const stored = localStorage.getItem(STORAGE_KEY);
const storedIndex = localStorage.getItem(INDEX_KEY);
if (stored) {
recommendationHistory = JSON.parse(stored);
console.log('从存储加载历史记录:', recommendationHistory.length, '条');
}
if (storedIndex !== null) {
currentIndex = parseInt(storedIndex);
console.log('当前索引:', currentIndex);
}
} catch (error) {
console.error('加载历史记录失败:', error);
recommendationHistory = [];
currentIndex = -1;
}
}
// 保存历史记录到localStorage
function saveHistoryToStorage() {
try {
localStorage.setItem(STORAGE_KEY, JSON.stringify(recommendationHistory));
localStorage.setItem(INDEX_KEY, currentIndex.toString());
} catch (error) {
console.error('保存历史记录失败:', error);
}
}
// 清理过期的历史记录
function cleanupOldHistory() {
const now = Date.now();
const maxAge = 1 * 60 * 60 * 1000; // 1小时。只是我这样写了，并不一定是1小时清理。
recommendationHistory = recommendationHistory.filter(item => {
return (now - item.timestamp) < maxAge;
});
// 调整currentIndex
if (currentIndex >= recommendationHistory.length) {
currentIndex = recommendationHistory.length - 1;
}
saveHistoryToStorage();
}
// 获取推荐数据（修复版本）
function getRecommendationData() {
const videos = [];
const videoElements = document.querySelectorAll('ytd-rich-item-renderer, ytd-video-renderer, ytd-compact-video-renderer');
videoElements.forEach(element => {
try {
// 标题
const titleElement = element.querySelector('#video-title, h3 a, .ytd-video-meta-block h3 a, #video-title-link');
// 链接
const linkElement = element.querySelector('a#thumbnail, a#video-title, #video-title-link, a[href*="/watch"]');
// 缩略图
const thumbnailElement = element.querySelector('img, ytd-thumbnail img, .ytd-thumbnail img');
// 频道名称
const channelElement = element.querySelector(
'#channel-name a, ' +
'.ytd-channel-name a, ' +
'ytd-channel-name a, ' +
'#metadata a[href*="/channel"], ' +
'#metadata a[href*="/@"], ' +
'.ytd-video-meta-block #metadata a'
);
// 视频时长
const durationElement = element.querySelector(
'ytd-thumbnail-overlay-time-status-renderer #text, ' +
'.ytd-thumbnail-overlay-time-status-renderer #text, ' +
'span.ytd-thumbnail-overlay-time-status-renderer, ' +
'.video-time, ' +
'ytd-thumbnail-overlay-time-status-renderer span'
);
// 观看次数和上传时间（通常在metadata中）
const metadataElements = element.querySelectorAll(
'#metadata-line span, ' +
'.ytd-video-meta-block #metadata-line span, ' +
'#metadata span, ' +
'.ytd-video-meta-block span:not([id]), ' +
'ytd-video-meta-block span'
);
if (titleElement && linkElement) {
// 提取观看次数和上传时间
let viewCount = '';
let uploadTime = '';
// 从metadata元素中提取信息
metadataElements.forEach(span => {
const text = span.textContent?.trim() || '';
if (text) {
// 检查是否是观看次数（包含"次观看"、"views"等）
if (text.includes('次观看') || text.includes('views') || text.includes('次播放') || /^\d+[\d,]*\s*(次|views)/i.test(text)) {
if (!viewCount) viewCount = text;
}
// 检查是否是上传时间（包含时间相关词汇）
else if (text.includes('前') || text.includes('ago') || text.includes('天') || text.includes('小时') || text.includes('分钟') || text.includes('秒') ||
text.includes('年') || text.includes('月') || text.includes('周') || /\d+(天|小时|分钟|秒|年|月|周|hours?|days?|minutes?|seconds?|years?|months?|weeks?)/i.test(text)) {
if (!uploadTime) uploadTime = text;
}
}
});
// 如果上面的方法没有找到，尝试其他选择器
if (!viewCount || !uploadTime) {
const additionalMetadata = element.querySelectorAll(
'span:not([id]):not([class*="button"]):not([class*="icon"]), ' +
'div:not([id]):not([class*="button"]):not([class*="icon"]) span'
);
additionalMetadata.forEach(span => {
const text = span.textContent?.trim() || '';
if (text && text.length > 0 && text.length < 50) { // 避免太长的文本
if (!viewCount && (text.includes('次观看') || text.includes('views') || /^\d+[\d,]*\s*(次|views)/i.test(text))) {
viewCount = text;
}
if (!uploadTime && (text.includes('前') || text.includes('ago') || /\d+(天|小时|分钟|秒|年|月|周)/i.test(text))) {
uploadTime = text;
}
}
});
}
const videoData = {
title: titleElement.textContent?.trim() || '',
url: linkElement.href || '',
thumbnail: thumbnailElement?.src || thumbnailElement?.getAttribute('data-src') || '',
channel: channelElement?.textContent?.trim() || '',
duration: durationElement?.textContent?.trim() || '',
viewCount: viewCount,
uploadTime: uploadTime,
element: element.outerHTML
};
// 调试输出
if (videoData.title) {
console.log('提取到视频数据:', {
title: videoData.title.substring(0, 30) + '...',
duration: videoData.duration,
viewCount: videoData.viewCount,
uploadTime: videoData.uploadTime,
channel: videoData.channel
});
}
videos.push(videoData);
}
} catch (error) {
console.log('提取视频数据时出错:', error);
}
});
console.log(`总共提取到 ${videos.length} 个视频`);
return videos;
}
// 保存当前推荐内容
function saveCurrentRecommendations() {
if (isRestoring) return;
const recommendations = getRecommendationData();
if (recommendations.length > 0) {
// 检查是否与最新的历史记录相同（避免重复保存）
if (recommendationHistory.length > 0) {
const latest = recommendationHistory[recommendationHistory.length - 1];
const currentUrls = recommendations.map(r => r.url).sort();
const latestUrls = latest.data.map(r => r.url).sort();
if (JSON.stringify(currentUrls) === JSON.stringify(latestUrls)) {
console.log('推荐内容未变化，跳过保存');
// 忘了要写什么 想起来再说
return;
}
}
// 如果当前不在历史末尾，删除后面的历史
if (currentIndex < recommendationHistory.length - 1) {
recommendationHistory = recommendationHistory.slice(0, currentIndex + 1);
}
recommendationHistory.push({
timestamp: Date.now(),
data: recommendations,
url: window.location.href
});
// 限制历史记录数量
if (recommendationHistory.length > 6) {
recommendationHistory.shift();
} else {
currentIndex++;
}
// 保存到localStorage
saveHistoryToStorage();
updateButtonStates();
console.log('已保存推荐内容，当前历史数量:', recommendationHistory.length);
}
}
// 检测当前主题模式
// 待修改
function isDarkMode() {
// 获取页面的主容器元素
const el = document.querySelector('ytd-app') || document.body;
const bgColor = window.getComputedStyle(el).backgroundColor;
// 解析背景颜色为 RGB
const rgb = bgColor.match(/\d+/g);
if (!rgb || rgb.length < 3) return false;
// 将 RGB 转为亮度值（YIQ公式，近似反映人眼感受）
// https://zh.wikipedia.org/zh-hans/YIQ
const [r, g, b] = rgb.map(Number);
const brightness = (r * 299 + g * 587 + b * 114) / 1000;
return brightness < 128; // 亮度低于128视为深色模式
}
// 创建自定义视频卡片
function createVideoCard(video, isDark) {
const card = document.createElement('div');
const cardBg = isDark ? '#0f0f0f' : '#ffffff';
const textColor = isDark ? '#f1f1f1' : '#0f0f0f';
const secondaryTextColor = isDark ? '#aaaaaa' : '#606060';
const hoverBg = isDark ? '#272727' : '#f8f8f8';
card.style.cssText = `
background: ${cardBg};
border-radius: 12px;
overflow: hidden;
cursor: pointer;
transition: all 0.2s ease;
margin-bottom: 16px;
box-shadow: ${isDark ? '0 1px 3px rgba(255,255,255,0.1)' : '0 1px 3px rgba(0,0,0,0.1)'};
`;
// 提取视频ID用于缩略图
const videoId = extractVideoId(video.url);
const thumbnailUrl = videoId ? `https://img.youtube.com/vi/${videoId}/0.jpg` : video.thumbnail;
// 格式化视频时长显示
const durationDisplay = video.duration || '';
// 格式化上传时间和观看次数
const uploadTimeDisplay = video.uploadTime || '';
const viewCountDisplay = video.viewCount || '';
// 构建元数据行
let metadataLine = '';
if (viewCountDisplay && uploadTimeDisplay) {
metadataLine = `${viewCountDisplay} • ${uploadTimeDisplay}`;
} else if (viewCountDisplay) {
metadataLine = viewCountDisplay;
} else if (uploadTimeDisplay) {
metadataLine = uploadTimeDisplay;
} else {
metadataLine = '推荐视频';
}
card.innerHTML = `
<div style="position: relative; width: 100%; padding-bottom: 56.25%; background: #000;">
<img src="${thumbnailUrl}"
alt="${video.title}"
style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover;"
loading="lazy"
onerror="this.style.display='none'; this.nextElementSibling.style.display='flex';">
<div style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: ${isDark ? '#181818' : '#f9f9f9'}; display: none; align-items: center; justify-content: center; color: ${secondaryTextColor}; font-size: 14px;">
缩略图加载失败
</div>
${durationDisplay ? `
<div style="position: absolute; bottom: 8px; right: 8px; background: rgba(0,0,0,0.8); color: white; padding: 3px 6px; border-radius: 4px; font-size: 12px; font-weight: 500; font-family: "Roboto", sans-serif;">
${durationDisplay}
</div>` : ''}
</div>
<div style="padding: 12px;">
<h3 style="margin: 0 0 8px 0; font-size: 16px; font-weight: 500; line-height: 1.3; color: ${textColor}; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; word-break: break-word;">
${video.title}
</h3>
<div style="display: flex; align-items: center; gap: 8px; margin-bottom: 4px;">
<span style="color: ${secondaryTextColor}; font-size: 14px; font-weight: 400; max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;">
${video.channel}
</span>
</div>
<div style="color: ${secondaryTextColor}; font-size: 13px; line-height: 1.2;">
${metadataLine}
</div>
</div>
`;
// 添加悬停效果
card.addEventListener('mouseenter', () => {
card.style.backgroundColor = hoverBg;
card.style.transform = 'scale(1.02)';
});
card.addEventListener('mouseleave', () => {
card.style.backgroundColor = cardBg;
card.style.transform = 'scale(1)';
});
// 添加点击事件
card.addEventListener('click', () => {
if (video.url) {
window.open(video.url, '_blank');
}
});
return card;
}
// 提取YouTube视频ID
function extractVideoId(url) {
if (!url) return null;
const regex = /(?:youtube\.com\/(?:[^\/]+\/.+\/|(?:v|e(?:mbed)?)\/|.*[?&]v=)|youtu\.be\/)([^"&?\/\s]{11})/;
const match = url.match(regex);
return match ? match[1] : null;
}
// 创建自定义容器
function createCustomContainer(recommendations, isDark) {
const container = document.createElement('div');
const bgColor = isDark ? '#0f0f0f' : '#ffffff';
container.style.cssText = `
background: ${bgColor};
padding: 20px;
margin: 10px 0;
border-radius: 12px;
box-shadow: ${isDark ? '0 2px 8px rgba(255,255,255,0.05)' : '0 2px 8px rgba(0,0,0,0.1)'};
`;
// 添加标题
const title = document.createElement('div');
title.style.cssText = `
font-size: 18px;
font-weight: 600;
color: ${isDark ? '#f1f1f1' : '#0f0f0f'};
margin-bottom: 20px;
display: flex;
align-items: center;
gap: 12px;
`;
title.innerHTML = `
<svg width="24" height="24" viewBox="0 0 24 24" fill="currentColor">
<path d="M13 3c-4.97 0-9 4.03-9 9H1l3.89 3.89.07.14L9 12H6c0-3.87 3.13-7 7-7s7 3.13 7 7-3.13 7-7 7c-1.93 0-3.68-.79-4.94-2.06l-1.42 1.42C8.27 19.99 10.51 21 13 21c4.97 0 9-4.03 9-9s-4.03-9-9-9zm-1 5v5l4.28 2.54.72-1.21-3.5-2.08V8H12z"/>
</svg>
历史推荐内容 (${new Date(recommendations.timestamp).toLocaleString()})
`;
container.appendChild(title);
// 创建网格布局
const grid = document.createElement('div');
grid.style.cssText = `
display: grid;
grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
gap: 16px;
`;
// 添加视频卡片
recommendations.data.forEach(video => {
if (video.title && video.url) {
const card = createVideoCard(video, isDark);
grid.appendChild(card);
}
});
container.appendChild(grid);
return container;
}
// 恢复推荐内容
function restoreRecommendations(index) {
if (index < 0 || index >= recommendationHistory.length) return;
isRestoring = true;
const recommendations = recommendationHistory[index];
try {
// 找到推荐内容容器
const targetContainer = document.querySelector('ytd-rich-grid-renderer #contents') ||
document.querySelector('ytd-section-list-renderer #contents') ||
document.querySelector('#primary #contents');
if (targetContainer) {
// 清空当前内容
targetContainer.innerHTML = '';
// 检测深色模式
const isDark = isDarkMode();
// 创建自定义容器和内容
const customContainer = createCustomContainer(recommendations, isDark);
targetContainer.appendChild(customContainer);
currentIndex = index;
saveHistoryToStorage();
updateButtonStates();
console.log('已恢复推荐内容，索引:', index, '时间:', new Date(recommendations.timestamp).toLocaleString());
}
} catch (error) {
console.error('恢复推荐内容时出错:', error);
} finally {
setTimeout(() => {
isRestoring = false;
}, 1000);
}
}
// 更新按钮状态
function updateButtonStates() {
const backwardBtn = document.getElementById('youtube-backward-btn');
const forwardBtn = document.getElementById('youtube-forward-btn');
if (backwardBtn && forwardBtn) {
// 更新按钮可用状态
backwardBtn.disabled = currentIndex <= 0;
forwardBtn.disabled = currentIndex >= recommendationHistory.length - 1;
// 更新按钮样式
if (backwardBtn.disabled) {
backwardBtn.style.opacity = '0.5';
backwardBtn.style.cursor = 'not-allowed';
} else {
backwardBtn.style.opacity = '1';
backwardBtn.style.cursor = 'pointer';
}
if (forwardBtn.disabled) {
forwardBtn.style.opacity = '0.5';
forwardBtn.style.cursor = 'not-allowed';
} else {
forwardBtn.style.opacity = '1';
forwardBtn.style.cursor = 'pointer';
}
// 更新按钮文本显示当前位置
const backwardText = backwardBtn.querySelector('svg').nextSibling;
const forwardText = forwardBtn.querySelector('svg').nextSibling;
if (backwardText) backwardText.textContent = `往前Prev (${Math.max(0, currentIndex)}/${Math.max(0, recommendationHistory.length - 1)})`;
if (forwardText) forwardText.textContent = `往后Next (${Math.max(0, currentIndex)}/${Math.max(0, recommendationHistory.length - 1)})`;
}
}
// 添加按钮到页面
function addButtonsToPage() {
if (document.getElementById('youtube-backward-btn')) {
return;
}
const targetElement = document.querySelector('ytd-masthead #end, #masthead #buttons');
if (targetElement) {
const buttonContainer = document.createElement('div');
buttonContainer.style.cssText = `
display: flex;
align-items: center;
margin-left: 1px;
width: 0;
opacity: 0;
overflow: hidden;
transition: width 1.2s ease, opacity 1.2s ease;
`;
const backwardBtn = createBackwardButton();
const forwardBtn = createForwardButton();
backwardBtn.addEventListener('click', () => {
if (currentIndex > 0) {
restoreRecommendations(currentIndex - 1);
}
});
forwardBtn.addEventListener('click', () => {
if (currentIndex < recommendationHistory.length - 1) {
restoreRecommendations(currentIndex + 1);
}
});
buttonContainer.appendChild(backwardBtn);
buttonContainer.appendChild(forwardBtn);
targetElement.appendChild(buttonContainer);
buttonContainer.offsetWidth;
buttonContainer.style.width = 'auto'; // 先设为auto，会自动撑开
buttonContainer.style.opacity = '1';
updateButtonStates();
}
}
// 删除按钮并添加动画
function removeButtonsFromPage() {
const buttonContainer = document.querySelector('#youtube-backward-btn')?.parentElement;
if (!buttonContainer) return;
// 获取当前宽度，确保是数值且有单位
const currentWidth = buttonContainer.offsetWidth + 'px';
// 先设置宽度为当前宽度（防止宽度是auto），透明度为1，overflow隐藏
buttonContainer.style.width = currentWidth;
buttonContainer.style.opacity = '1';
buttonContainer.style.overflow = 'hidden';
// 触发浏览器渲染，使初始样式生效
buttonContainer.offsetWidth; // 访问触发回流
// 设置过渡效果
buttonContainer.style.transition = 'width 1.2s ease, opacity 1.2s ease';
// 设置目标样式：宽度0，透明度0
buttonContainer.style.width = '0';
buttonContainer.style.opacity = '0';
// 动画结束后移除元素
setTimeout(() => {
if (buttonContainer && buttonContainer.parentElement) {
buttonContainer.parentElement.removeChild(buttonContainer);
}
}, 1200);
}
// 监听页面变化
function observePageChanges() {
const observer = new MutationObserver((mutations) => {
let shouldSave = false;
mutations.forEach((mutation) => {
if (mutation.type === 'childList') {
// 检查是否有新的推荐内容加载
const addedNodes = Array.from(mutation.addedNodes);
if (addedNodes.some(node =>
node.nodeType === 1 &&
(node.matches && node.matches('ytd-rich-item-renderer, ytd-video-renderer')) ||
(node.querySelector && node.querySelector('ytd-rich-item-renderer, ytd-video-renderer'))
)) {
shouldSave = true;
}
}
});
if (shouldSave && !isRestoring) {
setTimeout(() => {
saveCurrentRecommendations();
}, 1000);
}
});
// 开始观察
const targetNode = document.querySelector('ytd-app') || document.body;
observer.observe(targetNode, {
childList: true,
subtree: true
});
}
// 监听URL变化
function observeUrlChanges() {
let currentUrl = window.location.href;
const urlObserver = new MutationObserver(() => {
if (window.location.href !== currentUrl) {
currentUrl = window.location.href;
// 如果是首页，添加按钮并保存推荐内容
if (window.location.pathname === '/' || window.location.pathname === '') {
setTimeout(() => {
addButtonsToPage();
saveCurrentRecommendations();
}, 2000);
}
else{
removeButtonsFromPage()
}
}
});
urlObserver.observe(document.body, {
childList: true,
subtree: true
});
}
function setupYouTubeLogoClickHandler() {
document.addEventListener('click', function (e) {
// 检查点击的元素是否是 YouTube 图标或其父元素
const logo = e.target.closest('a#logo');
if (logo) {
saveCurrentRecommendations();
}
});
}
// 初始化
function init() {
console.log('YouTube推荐内容回溯脚本已启动');
// 加载历史记录
loadHistoryFromStorage();
// 清理过期记录
cleanupOldHistory();
// 等待页面加载完成
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', () => {
setTimeout(init, 1000);
});
return;
}
// 如果在首页，初始化功能
if (window.location.pathname === '/' || window.location.pathname === '') {
setTimeout(() => {
addButtonsToPage();
// 页面刷新后，不立即保存当前内容，给用户选择恢复的机会
setTimeout(() => {
if (!isRestoring) {
saveCurrentRecommendations();
}
}, 3000);
observePageChanges();
}, 2000);
}
else{
removeButtonsFromPage()
}
// 监听URL变化
observeUrlChanges();
}
// 启动脚本
init();
})();
