记账�?/title>  <meta name="description" content="记账�? /> <meta name="keywords" content="expense-tracker,life,tools,webutils" /> <meta name="author" content="WebUtils" /> <meta name="robots" content="index, follow" /> <link rel="canonical" href="https://essays4u.net/tools/life/expense-tracker.html" />  <meta property="og:title" content="记账�? /> <meta property="og:description" content="记账�? /> <meta property="og:type" content="website" /> <meta property="og:url" content="https://essays4u.net/tools/life/expense-tracker.html" /> <meta property="og:site_name" content="WebUtils" /> <meta property="og:locale" content="zh_CN" /> <meta property="og:image" content="https://essays4u.net/social-preview.png" /> <meta property="og:image:width" content="1280" /> <meta property="og:image:height" content="640" /> <meta property="og:image:type" content="image/png" />  <meta name="twitter:card" content="summary" /> <meta name="twitter:title" content="记账�? /> <meta name="twitter:description" content="记账�? /> <meta name="twitter:image" content="https://essays4u.net/social-preview.png" /> <style> :root { --bg-deep: #0a0a0f; --bg-surface: #12121a; --bg-card: #1a1a24; --bg-input: #0e0e14; --text-primary: #e8e8ed; --text-secondary: #8888a0; --text-muted: #55556a; --border-subtle: #2a2a3a; --border-strong: #3a3a4a; --accent-cyan: #00f5d4; --accent-magenta: #f72585; --accent-green: #10b981; --accent-red: #f43f5e; --accent-yellow: #fbbf24; --accent-blue: #4cc9f0; --accent-purple: #7b2cbf; --radius-sm: 4px; --radius-md: 8px; --radius-lg: 12px; --font-sans: "Space Grotesk", -apple-system, blinkmacsystemfont, "Segoe UI", roboto, sans-serif; --font-mono: "JetBrains Mono", "Courier New", monospace; --shadow: 0 2px 8px rgba(0, 0, 0, 0.3); } [data-theme="light"] { --bg-deep: #fafafa; --bg-surface: #fff; --bg-card: #fff; --bg-input: #f5f5f5; --text-primary: #1a1a1a; --text-secondary: #666; --text-muted: #999; --border-subtle: #e5e5e5; --border-strong: #d5d5d5; --accent-cyan: #00d4b8; --accent-magenta: #e63975; --shadow: 0 2px 8px rgba(0, 0, 0, 0.08); } .theme-toggle { position: fixed; top: 1rem; right: 1rem; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border-subtle); background: var(--color-bg-card); cursor: pointer; font-size: 1.2rem; z-index: 100; transition: all 0.2s; display: flex; align-items: center; justify-content: center; } .theme-toggle:hover { transform: scale(1.1); } * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: var(--font-sans); min-height: 100vh; background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%); padding: 20px; } .container { max-width: 500px; margin: 0 auto; background: white; padding: 30px; border-radius: 15px; box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2); } h1 { text-align: center; margin-bottom: 20px; } .balance { text-align: center; padding: 20px; background: #f7fafc; border-radius: 10px; margin-bottom: 20px; } .balance-amount { font-size: 2.5rem; font-weight: bold; } .balance-amount.positive { color: #38a169; } .balance-amount.negative { color: #e53e3e; } .summary { display: flex; justify-content: space-around; margin-bottom: 20px; } .summary-item { text-align: center; } .income { color: #38a169; } .expense { color: #e53e3e; } .form { display: grid; gap: 10px; margin-bottom: 20px; } input, select { padding: 12px; border: 2px solid #e2e8f0; border-radius: 8px; } .btn { padding: 12px; background: #667eea; color: white; border: none; border-radius: 8px; cursor: pointer; } .list { max-height: 300px; overflow-y: auto; } .item { display: flex; justify-content: space-between; padding: 12px; border-bottom: 1px solid #e2e8f0; } .item-amount.income { color: #38a169; } .item-amount.expense { color: #e53e3e; } .breadcrumb { background: rgba(255, 255, 255, 0.95); padding: 8px 15px; border-radius: 20px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); font-size: 0.85rem; } .breadcrumb a { color: #667eea; text-decoration: none; } .breadcrumb a:hover { text-decoration: underline; } .breadcrumb span { color: #999; margin: 0 5px; } </style>  <link rel="preconnect" href="https://fonts.googleapis.com" /> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin /> <link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap" rel="stylesheet" /> </head> <body> <button class="theme-toggle" onclick="toggleTheme()" aria-label="切换主题"> <span id="theme-icon">🌙</span> </button> <nav class="breadcrumb"> <a href="../../index.html">首页</a> <span>�?/span> 记账�? </nav> <div class="container"> <h1>💰 记账�?/h1> <div class="balance"> 余额 <div class="balance-amount" id="balance">¥0</div> </div> <div class="summary"> <div class="summary-item"> <div class="income" id="totalIncome">¥0</div> <div>收入</div> </div> <div class="summary-item"> <div class="expense" id="totalExpense">¥0</div> <div>支出</div> </div> </div> <div class="form"> <input type="text" id="desc" placeholder="描述" /> <input type="number" id="amount" placeholder="金额" /> <select id="type"> <option value="expense">支出</option> <option value="income">收入</option> </select> <button class="btn" onclick="addTransaction()">添加</button> </div> <div class="list" id="list"></div> </div> <script> let transactions = JSON.parse(localStorage.getItem("transactions") || "[]"); function save() { localStorage.setItem("transactions", JSON.stringify(transactions)); } function render() { const income = transactions .filter((t) => t.type === "income") .reduce((s, t) => s + t.amount, 0); const expense = transactions .filter((t) => t.type === "expense") .reduce((s, t) => s + t.amount, 0); const balance = income - expense; document.getElementById("balance").textContent = "¥" + balance.toFixed(2); document.getElementById("balance").className = "balance-amount " + (balance >= 0 ? "positive" : "negative"); document.getElementById("totalIncome").textContent = "¥" + income.toFixed(2); document.getElementById("totalExpense").textContent = "¥" + expense.toFixed(2); document.getElementById("list").innerHTML = transactions .slice() .reverse() .map( (t, i) => '<div class="item"><span>' + t.desc + '</span><span class="item-amount ' + t.type + '">' + (t.type === "income" ? "+" : "-") + "¥" + t.amount.toFixed(2) + "</span></div>" ) .join(""); } function addTransaction() { const desc = document.getElementById("desc").value.trim(); const amount = parseFloat(document.getElementById("amount").value); const type = document.getElementById("type").value; if (desc && amount > 0) { transactions.push({ desc, amount, type, date: new Date().toISOString() }); save(); render(); document.getElementById("desc").value = ""; document.getElementById("amount").value = ""; } } render(); // Theme toggle function toggleTheme() { const html = document.documentElement; const currentTheme = html.getAttribute("data-theme"); const newTheme = currentTheme === "light" ? "dark" : "light"; html.setAttribute("data-theme", newTheme); document.getElementById("theme-icon").textContent = newTheme === "light" ? "☀�? : "🌙"; localStorage.setItem("theme", newTheme); } // Load saved theme const savedTheme = localStorage.getItem("theme") || "dark"; if (savedTheme === "light") { document.documentElement.setAttribute("data-theme", "light"); document.getElementById("theme-icon").textContent = "☀�?; } </script> </body> </html>