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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>在线剪贴板 · HereIs</title>
<link rel="icon" type="image/png" href="jtbpng.png">
<style>
:root {
--bg-primary: #0f172a;
--bg-secondary: #1e293b;
--bg-tertiary: #334155;
--text-primary: #f8fafc;
--text-secondary: #94a3b8;
--accent: #3b82f6;
--success: #22c55e;
--danger: #ef4444;
--warning: #f59e0b;
--purple: #8b5cf6;
--border: #475569;
}
.light-mode {
--bg-primary: #f8fafc;
--bg-secondary: #e2e8f0;
--bg-tertiary: #cbd5e1;
--text-primary: #0f172a;
--text-secondary: #475569;
--border: #94a3b8;
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
body {
background: var(--bg-primary);
color: var(--text-primary);
min-height: 100vh;
}
.hidden { display: none !important; }
.scroll::-webkit-scrollbar { width: 4px; }
.scroll::-webkit-scrollbar-track { background: var(--bg-secondary); }
.scroll::-webkit-scrollbar-thumb { background: var(--bg-tertiary); border-radius: 2px; }
/* ========== 登录页 ========== */
#login {
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
padding: 20px;
}
.login-box {
width: 100%;
max-width: 400px;
}
.login-title {
text-align: center;
margin-bottom: 40px;
}
.login-icon {
font-size: 64px;
margin-bottom: 16px;
}
.login-title h1 {
font-size: 32px;
font-weight: 700;
margin-bottom: 8px;
}
.login-title p {
color: var(--text-secondary);
font-size: 18px;
}
.login-form {
background: var(--bg-secondary);
padding: 32px;
border-radius: 16px;
box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}
.form-group {
margin-bottom: 20px;
}
.form-group label {
display: block;
font-size: 14px;
font-weight: 500;
margin-bottom: 8px;
color: var(--text-secondary);
}
.form-group input {
width: 100%;
padding: 12px 16px;
border: none;
border-radius: 12px;
background: var(--bg-tertiary);
color: var(--text-primary);
font-size: 16px;
outline: none;
transition: box-shadow 0.2s;
}
.form-group input:focus {
box-shadow: 0 0 0 2px var(--accent);
}
.btn-login {
width: 100%;
padding: 14px;
border: none;
border-radius: 12px;
background: linear-gradient(135deg, var(--accent), var(--purple));
color: white;
font-size: 16px;
font-weight: 600;
cursor: pointer;
transition: transform 0.2s;
}
.btn-login:hover { transform: scale(1.02); }
.btn-login:active { transform: scale(0.98); }
.login-error {
margin-top: 16px;
text-align: center;
color: var(--danger);
font-size: 14px;
}
.theme-btn {
margin-top: 24px;
text-align: center;
}
.theme-btn button {
padding: 8px 16px;
border: none;
border-radius: 8px;
background: var(--bg-secondary);
color: var(--text-secondary);
cursor: pointer;
font-size: 14px;
}
.register-link {
margin-top: 16px;
text-align: center;
font-size: 14px;
color: var(--text-secondary);
}
.register-link a {
color: var(--accent);
cursor: pointer;
text-decoration: none;
}
/* ========== 主页面 ========== */
#main {
height: 100vh;
display: flex;
flex-direction: column;
}
.main-header {
padding: 12px 16px;
border-bottom: 1px solid var(--border);
background: var(--bg-secondary);
display: flex;
align-items: center;
justify-content: space-between;
flex-shrink: 0;
}
.header-title {
font-size: 18px;
font-weight: 600;
display: flex;
align-items: center;
gap: 8px;
/* 新增：允许换行（基础样式） */
/* flex-wrap: wrap;*/
}
.header-actions {
display: flex;
align-items: center;
gap: 8px;
}
.btn-icon {
padding: 8px;
border: none;
border-radius: 8px;
background: var(--bg-tertiary);
color: var(--text-primary);
cursor: pointer;
font-size: 16px;
}
.btn-logout { color: var(--danger); }
/* 内容列表区域 - 聊天风格 */
.clipboard-list {
flex: 1;
overflow-y: auto;
padding: 16px;
display: flex;
flex-direction: column;
gap: 8px;
align-items: flex-start;
}
.clip-item {
max-width: 80%;
width: fit-content;
min-width: 100px;
border-radius: 16px;
padding: 10px 16px;
border: 1px solid transparent;
position: relative;
cursor: pointer;
transition: all 0.2s;
}
.clip-item:hover {
border-color: var(--accent);
transform: translateY(-1px);
box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
/* 自己的消息：靠右，右上角 */
.clip-item.own {
align-self: flex-end;
border-bottom-right-radius: 4px;
border-bottom-left-radius: 16px;
color: white;
}
.clip-item.own .clip-time {
text-align: right;
justify-content: flex-end;
color: rgba(255,255,255,0.7);
}
.clip-item.own .clip-content {
color: white;
}
.clip-item.own .clip-author {
color: inherit;
}
/* 他人同昵称：灰色，靠左，左上角 */
.clip-item.same-name {
align-self: flex-start;
background: var(--bg-tertiary);
border-bottom-left-radius: 4px;
border-bottom-right-radius: 16px;
}
.clip-item.same-name .clip-time {
text-align: left;
justify-content: flex-start;
}
.clip-item.same-name .clip-author {
color: var(--purple);
}
/* 他人不同昵称：土黄色，靠左，左上角 */
.clip-item.other-name {
align-self: flex-start;
background: #d4a373;
border-bottom-left-radius: 4px;
border-bottom-right-radius: 16px;
}
.clip-item.other-name .clip-time {
text-align: left;
justify-content: flex-start;
}
.clip-item.other-name .clip-content {
color: #1e1e1e;
}
.clip-item.other-name .clip-author {
color: #5c3c1a;
}
.clip-item .clip-time {
font-size: 11px;
margin-bottom: 4px;
display: flex;
align-items: center;
gap: 6px;
}
.clip-item .clip-author {
font-size: 11px;
opacity: 0.8;
}
.clip-item .clip-index {
display: none; /* 聊天不需要序号 */
}
.clip-item.highlight {
border: 3px solid #ff8800 !important;
box-shadow: 0 0 20px rgba(255, 136, 0, 0.6);
transform: scale(1.02);
transition: all 0.2s;
}
/* 阅后即焚 - 模糊状态 */
.clip-item.burn-mode .clip-content {
filter: blur(8px);
user-select: none;
transition: filter 0.3s;
}
.clip-item.burn-mode.revealed .clip-content {
filter: blur(0);
animation: burnReveal 0.4s ease-out forwards;
}
.clip-item.burn-mode.clear-blur .clip-content {
filter: blur(0px) !important;
}
@keyframes burnReveal {
0% { transform: scale(0.8); opacity: 0.5; filter: blur(10px); }
50% { transform: scale(1.05); }
100% { transform: scale(1); opacity: 1; filter: blur(0); }
}
.empty-state {
text-align: center;
padding: 60px 20px;
color: var(--text-secondary);
width: 100%;
}
.empty-icon { font-size: 48px; margin-bottom: 16px; }
/* 底部输入区 */
.input-bar {
padding: 12px 16px;
border-top: 1px solid var(--border);
background: var(--bg-secondary);
display: flex;
gap: 8px;
align-items: center;
flex-shrink: 0;
flex-wrap: wrap;
}
.btn-search {
padding: 12px 16px;
border: none;
border-radius: 10px;
background: var(--bg-tertiary);
color: var(--text-primary);
cursor: pointer;
font-size: 14px;
white-space: nowrap;
}
.input-bar input {
flex: 1;
padding: 12px 16px;
border: none;
border-radius: 10px;
background: var(--bg-tertiary);
color: var(--text-primary);
font-size: 14px;
outline: none;
min-width: 120px;
}
.input-bar input:focus {
box-shadow: 0 0 0 2px var(--accent);
}
.btn-add {
padding: 12px 20px;
border: none;
border-radius: 10px;
background: var(--accent);
color: white;
cursor: pointer;
font-size: 14px;
font-weight: 600;
white-space: nowrap;
}
.btn-add:disabled {
opacity: 0.5;
cursor: not-allowed;
}
/* ========== 详情弹窗 ========== */
.detail-modal {
position: fixed;
inset: 0;
background: rgba(0,0,0,0.8);
z-index: 100;
display: flex;
flex-direction: column;
}
.detail-header {
padding: 12px 16px;
border-bottom: 1px solid var(--border);
background: var(--bg-secondary);
display: flex;
align-items: center;
justify-content: space-between;
flex-shrink: 0;
}
.detail-actions {
display: flex;
gap: 8px;
}
.detail-btn {
padding: 8px 16px;
border: none;
border-radius: 8px;
cursor: pointer;
font-size: 14px;
font-weight: 500;
}
.btn-delete-detail {
background: var(--danger);
color: white;
}
.btn-select-all {
background: var(--bg-tertiary);
color: var(--text-primary);
}
.btn-confirm {
background: var(--success);
color: white;
}
.btn-close-detail {
background: var(--bg-tertiary);
color: var(--text-primary);
}
.detail-body {
flex: 1;
padding: 16px;
overflow: hidden;
}
.detail-textarea {
width: 100%;
height: 100%;
padding: 16px;
border: 1px solid var(--border);
border-radius: 12px;
background: var(--bg-secondary);
color: var(--text-primary);
font-size: 15px;
line-height: 1.6;
resize: none;
outline: none;
font-family: inherit;
}
.detail-textarea:focus {
border-color: var(--accent);
}
/* ========== 注册弹窗 ========== */
.modal {
position: fixed;
inset: 0;
background: rgba(0,0,0,0.5);
display: flex;
align-items: center;
justify-content: center;
padding: 20px;
z-index: 100;
}
.modal-box {
width: 100%;
max-width: 400px;
background: var(--bg-secondary);
padding: 24px;
border-radius: 16px;
}
.modal-box h3 {
font-size: 20px;
font-weight: 700;
margin-bottom: 20px;
}
.modal-actions {
display: flex;
gap: 12px;
margin-top: 20px;
}
.btn-cancel {
flex: 1;
padding: 12px;
border: none;
border-radius: 12px;
background: var(--bg-tertiary);
color: var(--text-primary);
font-weight: 600;
cursor: pointer;
}
.btn-submit {
flex: 1;
padding: 12px;
border: none;
border-radius: 12px;
background: var(--accent);
color: white;
font-weight: 600;
cursor: pointer;
}
/* ========== 全局通知 ========== */
#notification {
position: fixed;
top: 20px;
right: 20px;
background: var(--bg-tertiary);
color: var(--text-primary);
padding: 12px 20px;
border-radius: 12px;
box-shadow: 0 4px 12px rgba(0,0,0,0.2);
z-index: 200;
opacity: 0;
transform: translateY(-20px);
transition: opacity 0.3s ease, transform 0.3s ease;
border-left: 4px solid var(--accent);
pointer-events: none;
}
#notification.show {
opacity: 1;
transform: translateY(0);
}
/* ========== 响应式 ========== */
@media (max-width: 768px) {
@media (max-width: 768px) {
/* 原有样式保留，新增以下内容 */
.main-header {
padding: 8px 12px; /* 减小头部内边距，适配手机 */
align-items: center; /* 强制垂直居中 */
}
.header-title {
flex-direction: column; /* 手机端改为列布局，上下显示 */
align-items: flex-start; /* 文字左对齐 */
gap: 2px !important; /* 缩小行间距，紧凑显示 */
padding: 4px 0; /* 上下内边距，避免和按钮错位 */
line-height: 1.2; /* 行高适配 */
}
/* 调整用户名显示样式，手机端更紧凑 */
.user-display {
margin-left: 0 !important; /* 去掉左侧外边距，和在线剪贴板左对齐 */
padding: 2px 8px !important; /* 减小内边距 */
font-size: 12px !important; /* 缩小字体 */
}
/* 调整清晰按钮位置，和用户名同行 */
.header-title #unlockAllBtn {
align-self: flex-start; /* 左对齐 */
margin-top: 4px; /* 和用户名拉开一点距离 */
font-size: 12px !important;
padding: 3px 8px !important;
}
/* 原有样式 */
.clip-item {
max-width: 90%;
padding: 8px 12px;
}
.detail-actions {
gap: 4px;
}
.detail-btn {
padding: 8px 10px;
font-size: 12px;
}
.input-bar {
flex-wrap: wrap;
}
.input-bar input {
order: -1;
width: 100%;
flex-basis: 100%;
}
.btn-search {
flex: 1;
}
.btn-add {
flex: 1;
}
}
/* 一键解锁按钮 */
#unlockAllBtn {
padding: 5px 10px;
font-size: 13px;
border-radius: 6px;
border: 1px solid var(--border);
background: var(--bg-tertiary);
color: var(--text-primary);
cursor: pointer;
transition: 0.15s ease;
}
#unlockAllBtn:hover {
background: var(--accent);
color: #fff;
border-color: var(--accent);
}
#unlockAllBtn:active {
transform: scale(0.96);
}
/* 用户名显示 */
.user-display {
display: none;
margin-left: 12px;
font-size: 14px;
font-weight: 400;
color: var(--text-secondary);
white-space: nowrap;
padding: 4px 10px;
background: var(--bg-tertiary);
border-radius: 20px;
transition: all 0.2s;
}
.user-display.has-user {
display: inline-block;
}
</style>
</head>
<body>
<!-- 登录页 -->
<div id="login">
<div class="login-box">
<div class="login-title">
<div class="login-icon">📋</div>
<h1>在线剪贴板</h1>
<h3>这是一个非常好用的剪贴板，绝对让你全球随时调用，每条内容可以5000字哦，^◡^</h3>
<p>HereIs Clipboard</p>
</div>
<div class="login-form">
<form id="loginForm">
<div class="form-group">
<label>昵称</label>
<input type="text" id="loginNickname" required placeholder="请输入昵称">
</div>
<div class="form-group">
<label>密码</label>
<input type="password" id="loginPassword" required placeholder="请输入密码">
</div>
<div class="form-group">
<label>验证码</label>
<input type="text" id="loginVerifyCode" required placeholder="请输入验证码">
</div>
<button type="submit" class="btn-login">登录</button>
<div id="loginError" class="login-error hidden"></div>
</form>
<div class="register-link">
没有账号？<a id="showRegister">立即注册</a>
<h3>⚡</h3>
<h3>jinchanjie@163.com</h3>
</div>
<div class="theme-btn">
<button id="themeToggle">🌙 / ☀️ 切换主题</button>
</div>
</div>
</div>
</div>
<!-- 主页面 -->
<div id="main" class="hidden">
<div class="main-header">
<div class="header-title">
<!-- <span>📋</span>-->
<span>📋在线剪贴板：</span>
<!-- <span>：</span>-->
<span id="currentUserDisplay" class="user-display"></span>
</div>
<div class="header-actions">
<button id="unlockAllBtn" onclick="unlockAllBurnItems()" class="btn-icon">清晰</button>
<button id="themeToggleMain" class="btn-icon">🌙</button>
<button id="logoutBtn" class="btn-icon btn-logout">🚪</button>
</div>
</div>
<div class="clipboard-list scroll" id="clipboardList">
<div class="empty-state">
<div class="empty-icon">📝</div>
<p>暂无内容，点击下方添加第一条</p>
</div>
</div>
<div class="input-bar">
<button id="searchBtn" class="btn-search">🔍 搜索</button>
<input type="text" id="mainInput" placeholder="输入内容，最多5000字..." maxlength="5000">
<button id="addBtn" class="btn-add" disabled>➕ 增加</button>
</div>
</div>
<!-- 详情弹窗 -->
<div id="detailModal" class="detail-modal hidden">
<div class="detail-header">
<div class="detail-actions">
<button id="deleteDetailBtn" class="detail-btn btn-delete-detail">🗑️ 删除</button>
<button id="selectAllBtn" class="detail-btn btn-select-all">📋 全选</button>
</div>
<div class="detail-actions">
<button id="confirmDetailBtn" class="detail-btn btn-confirm">✓ 确认</button>
<button id="closeDetailBtn" class="detail-btn btn-close-detail">✕ 关闭</button>
</div>
</div>
<div class="detail-body">
<textarea id="detailTextarea" class="detail-textarea" maxlength="5000"></textarea>
</div>
</div>
<!-- 注册弹窗 -->
<div id="registerModal" class="modal hidden">
<div class="modal-box">
<h3>注册新账号</h3>
<form id="registerForm">
<div class="form-group">
<label>昵称</label>
<input type="text" id="regNickname" required placeholder="设置昵称">
</div>
<div class="form-group">
<label>密码</label>
<input type="password" id="regPassword" required placeholder="设置密码">
</div>
<div class="modal-actions">
<button type="button" id="cancelRegister" class="btn-cancel">取消</button>
<button type="submit" class="btn-submit">注册</button>
</div>
</form>
</div>
</div>
<!-- 通知 -->
<div id="notification"></div>
<!-- 自定义弹窗 -->
<div id="globalModal" style="display:none; position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,0.5); z-index:1000; justify-content:center; align-items:center;">
<div style="background:#fff; border-radius:12px; padding:24px; width:85%; max-width:400px; box-shadow:0 4px 20px rgba(0,0,0,0.15); text-align:center;">
<p id="modalMessage" style="margin:0 0 20px; font-size:16px; color:#333;"></p>
<div id="modalButtons" style="display:flex; gap:12px; justify-content:center;"></div>
</div>
</div>
<script>
console.log('📋 HereIs 在线剪贴板 启动');
// ========== 配置 ==========
const SUPA = {
URL: 'https://shylkfcflzefikpwumim.supabase.co',
KEY: 'sb_publishable_llOnrl6WcHFgmSopJayuYg_UzHOTkfg'
};
const CONFIG = {
POLL_INTERVAL: 3600000,
MAX_CONTENT_LEN: 5000,
PREVIEW_LEN: 50,
MAX_ITEMS: 300
};
const STORAGE_KEY_PREFIX = 'clipboard_cache_';
const CACHE_VERSION = 1;
const TEN_MINUTES = 10 * 60 * 1000;
let cleanupTimer = null;
// ========== 状态 ==========
let state = {
me: null,
items: [],
dark: true,
pollTimer: null,
currentDetailId: null,
originalContent: '',
searchKeyword: '',
searchMatchIndex: -1,
lastItemCount: 0,
//burnList: {},
isFirstRender: true
};
// ========== 音效 ==========
let audioCtx = null;
function initAudio() {
if (!audioCtx) audioCtx = new (window.AudioContext || window.webkitAudioContext)();
}
function playDing() {
initAudio();
if (!audioCtx) return;
const osc = audioCtx.createOscillator();
const gain = audioCtx.createGain();
osc.connect(gain);
gain.connect(audioCtx.destination);
osc.type = 'sine';
osc.frequency.setValueAtTime(800, audioCtx.currentTime);
osc.frequency.setValueAtTime(1000, audioCtx.currentTime + 0.1);
gain.gain.setValueAtTime(0.3, audioCtx.currentTime);
gain.gain.exponentialRampToValueAtTime(0.01, audioCtx.currentTime + 0.3);
osc.start();
osc.stop(audioCtx.currentTime + 0.3);
}
// ==================== 新消息标题闪烁 ====================
const ORIGINAL_TITLE = document.title // 页面加载时的原始标题，永不变
let flashTimer = null
let flashStopTimer = null
let isBackgroundFlash = false
function flashTaskbar() {
// 1. 桌面通知 → 触发任务栏图标闪烁（PWA/安装应用也有效）
if ('Notification' in window && Notification.permission === 'granted') {
// 先关闭旧通知，避免堆积
if (window.lastFlashNotification) {
window.lastFlashNotification.close()
}
window.lastFlashNotification = new Notification('💬 新消息', {
body: '点击查看新内容',
tag: 'clipboard-flash', // 相同tag会替换，不会堆积
requireInteraction: false // 不需要用户点击，自动消失
})
} else if ('Notification' in window && Notification.permission === 'default') {
// 如果没授权，尝试请求
Notification.requestPermission()
}
// 2. 标题栏闪烁（备用，浏览器标签页有效）
if (flashTimer) clearInterval(flashTimer)
if (flashStopTimer) clearTimeout(flashStopTimer)
let flash = true
document.title = `【新消息】${ORIGINAL_TITLE}`
flashTimer = setInterval(() => {
document.title = flash ? `【新消息】${ORIGINAL_TITLE}` : ORIGINAL_TITLE
flash = !flash
}, 800)
if (document.hidden) {
isBackgroundFlash = true
} else {
isBackgroundFlash = false
flashStopTimer = setTimeout(() => {
stopFlash()
}, 5000)
}
}
function stopFlash() {
if (flashTimer) {
clearInterval(flashTimer)
flashTimer = null
}
if (flashStopTimer) {
clearTimeout(flashStopTimer)
flashStopTimer = null
}
document.title = ORIGINAL_TITLE
isBackgroundFlash = false
// 关闭桌面通知，停止任务栏闪烁
if (window.lastFlashNotification) {
window.lastFlashNotification.close()
window.lastFlashNotification = null
}
}
function playPop() {
initAudio();
if (!audioCtx) return;
const osc = audioCtx.createOscillator();
const gain = audioCtx.createGain();
osc.connect(gain);
gain.connect(audioCtx.destination);
osc.type = 'sine';
osc.frequency.setValueAtTime(200, audioCtx.currentTime);
osc.frequency.exponentialRampToValueAtTime(800, audioCtx.currentTime + 0.15);
gain.gain.setValueAtTime(0.4, audioCtx.currentTime);
gain.gain.exponentialRampToValueAtTime(0.01, audioCtx.currentTime + 0.2);
osc.start();
osc.stop(audioCtx.currentTime + 0.2);
}
// ========== 工具函数 ==========
function escapeHtml(s) {
const div = document.createElement('div');
div.textContent = s;
return div.innerHTML;
}
function safeArr(arr) {
return Array.isArray(arr) ? arr : [];
}
function formatTime(d) {
try {
return new Date(d).toLocaleString('zh-CN', {
month: '2-digit',
day: '2-digit',
hour: '2-digit',
minute: '2-digit'
});
} catch { return '--:--'; }
}
// ========== 新增辅助函数：加载/保存本地缓存 ==========
function getCacheKey(nickname) {
return STORAGE_KEY_PREFIX + nickname;
}
function loadLocalCache(nickname) {
const key = getCacheKey(nickname);
const data = localStorage.getItem(key);
if (data) {
try {
const parsed = JSON.parse(data);
if (parsed.version === CACHE_VERSION) {
return parsed.items || [];
}
} catch (e) {}
}
return [];
}
function saveLocalCache(nickname, items) {
const key = getCacheKey(nickname);
localStorage.setItem(key, JSON.stringify({
version: CACHE_VERSION,
items: items
}));
}
//清理过期条目的函数
function cleanExpiredItems(cachedItems) {
const now = Date.now();
// 过滤：保留未点开 或 数据库存在 或 点开但未超时 的条目
return cachedItems.filter(item => {
if (!item.revealed) return true; // 未点开 → 保留
if (item.dbExists) return true; // 数据库存在 → 保留
// 点开且数据库已删除，检查是否超时
if (now - item.revealTime < TEN_MINUTES) return true; // 未超时 → 保留
return false; // 超时 → 删除
});
}
// ========== 设备ID和颜色管理（按昵称存储） ==========
function getDeviceIdForNickname(nickname) {
const key = 'device_id_' + nickname;
let id = localStorage.getItem(key);
if (!id) {
id = Math.random().toString(36).substring(2, 10);
localStorage.setItem(key, id);
}
return id;
}
function getColorForNickname(nickname) {
const key = 'color_' + nickname;
//localStorage.removeItem(key);//要不要清除颜色，看情况吧
let color = localStorage.getItem(key);
if (!color) {
//每次随机颜色
//const hue = Math.floor(Math.random() * 360);
//color = `hsl(${hue}, 70%, 60%)`;
// 固定为浅蓝色 hsl(210, 70%, 65%)
//color = 'hsl(210, 70%, 65%)';
// 固定为紫红色 hsl(313, 72%, 56%)
color = 'hsl(313, 72%, 56%)';
// 色相固定在 180~240 之间（蓝绿色到蓝紫色）
//const hue = 180 + Math.floor(Math.random() * 60);
//color = `hsl(${hue}, 70%, 65%)`;
localStorage.setItem(key, color);
}
return color;
}
// 内容尾部附加设备ID（使用不可见字符作为分隔，避免干扰）
function appendDeviceId(content, deviceId) {
// 用零宽字符 + 固定标记，用户不可见且不会影响显示
return content + '\u200B\u200B<!--DEV:' + deviceId + '-->';
}
// 从内容中解析出真实内容和设备ID
function parseContent(raw) {
// 1. 先处理前缀：如果以 'thisneededde编码：' 开头，则去掉
let content = raw;
if (content && content.startsWith('thisneededde编码：')) {
content = content.substring('thisneededde编码：'.length);
content = decodeURIComponent(atob(content));
}
// 2. 再处理后缀标记（解析设备ID）
const marker = '<!--DEV:';
const idx = content.lastIndexOf(marker);
let deviceId = '';
if (idx !== -1) {
const start = idx + marker.length;
const end = content.indexOf('-->', start);
if (end !== -1) {
deviceId = content.substring(start, end);
content = content.substring(0, idx).trimEnd(); // 去掉尾部空白
}
// 如果后缀标记不完整（缺少 '-->'），则忽略，content保持去前缀后的原样
}
// 3. 统一返回
return { content, deviceId };
}
/*function parseContent(raw) {
const marker = '<!--DEV:';
const idx = raw.lastIndexOf(marker);