cards/index.html at main · catmcbe/cards · GitHub

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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>翻转卡片记忆程序</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            color: #333;
            min-height: 100vh;
            padding: 40px 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            text-align: center;
        }

        header {
            margin-bottom: 40px;
            color: white;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        h1 {
            font-size: 2.8rem;
            margin-bottom: 15px;
        }

        .subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 600px;
            margin: 0 auto;
        }

        .upload-section {
            background-color: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 40px 30px;
            margin: 30px auto;
            max-width: 600px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            border: 2px dashed rgba(255, 255, 255, 0.3);
            transition: all 0.3s ease;
        }

        .upload-section:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }

        .file-drop-area {
            padding: 50px 30px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
        }

        .file-drop-area:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }

        .file-drop-area.highlight {
            background-color: rgba(255, 255, 255, 0.3);
        }

        .upload-icon {
            font-size: 60px;
            margin-bottom: 20px;
            color: white;
        }

        .file-input {
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            opacity: 0;
            cursor: pointer;
        }

        .btn {
            background: #ff4081;
            color: white;
            border: none;
            padding: 12px 30px;
            font-size: 1.1rem;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 600;
            box-shadow: 0 5px 15px rgba(255, 64, 129, 0.4);
        }

        .btn:hover {
            background: #f50057;
            transform: translateY(-2px);
            box-shadow: 0 7px 18px rgba(255, 64, 129, 0.5);
        }

        .btn:active {
            transform: translateY(1px);
        }

        .btn-secondary {
            background: transparent;
            border: 2px solid white;
            color: white;
            box-shadow: none;
            margin-top: 15px;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .cards-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
            width: 100%;
            margin: 40px 0;
            padding: 10px;
        }

        .card {
            aspect-ratio: 2/1.5;
            perspective: 1500px;
            cursor: pointer;
        }

        .card-inner {
            position: relative;
            width: 100%;
            height: 100%;
            text-align: center;
            transition: transform 0.8s;
            transform-style: preserve-3d;
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
        }

        .card.flipped .card-inner {
            transform: rotateY(180deg);
        }

        .card-front, .card-back {
            position: absolute;
            width: 100%;
            height: 100%;
            -webkit-backface-visibility: hidden;
            backface-visibility: hidden;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 20px;
            border-radius: 20px;
        }

        .card-front {
            background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
            color: #333;
        }

        .card-back {
            background: linear-gradient(135deg, #3a1c71 0%, #d76d77 100%);
            color: white;
            transform: rotateY(180deg);
        }

        .card-number {
            position: absolute;
            top: 15px;
            right: 15px;
            background: rgba(0, 0, 0, 0.1);
            border-radius: 50%;
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
        }

        .card-front .card-number {
            background: rgba(0, 0, 0, 0.05);
            color: rgba(0, 0, 0, 0.5);
        }

        .card-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .card-content {
            font-size: 1.2rem;
            line-height: 1.6;
        }

        .flip-notice {
            position: absolute;
            bottom: 15px;
            font-size: 0.9rem;
            color: rgba(0, 0, 0, 0.5);
            font-style: italic;
        }

        .hidden {
            display: none;
        }

        .error-message {
            background-color: #ffebee;
            color: #c62828;
            padding: 15px;
            border-radius: 10px;
            margin-top: 20px;
            max-width: 600px;
        }

        .instruction {
            color: white;
            margin-top: 30px;
            max-width: 700px;
            text-align: left;
            background: rgba(0, 0, 0, 0.1);
            padding: 20px;
            border-radius: 15px;
        }

        code {
            background: rgba(0, 0, 0, 0.2);
            padding: 2px 6px;
            border-radius: 5px;
            font-family: monospace;
        }

        .card-counter {
            background: white;
            color: #3a1c71;
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: bold;
            margin-top: 20px;
            display: inline-block;
        }

        @media (max-width: 768px) {
            .cards-container {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            }

            h1 {
                font-size: 2.2rem;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <header>
            <h1>闪记</h1>
            <p class="subtitle">导入TXT文件，一键生成可翻转的记忆卡片，高效学习、轻松记忆</p>
        </header>

        <div class="upload-section" id="uploadSection">
            <div class="file-drop-area" id="dropArea">
                <div class="upload-icon">📁</div>
                <h3>点击或拖拽文件到此处</h3>
                <p>支持格式：TXT (格式：序号￥问题￥答案)</p>
                <input type="file" class="file-input" id="fileInput" accept=".txt">
            </div>

            <div class="hidden" id="statusMessage"></div>

            <div class="instruction">
                <p><strong>使用说明：</strong></p>
                <p>1. 创建符合格式的TXT文件：每行内容格式为 <code>序号￥问题￥答案</code></p>
                <p>2. 示例：<code>1￥什么是HTML？￥超文本标记语言</code></p>
                <p>3. 点击上方区域选择文件或直接拖拽文件到此处</p>
                <p>4. 点击卡片翻转查看答案，再次点击翻转回问题</p>
            </div>
        </div>

        <div class="hidden" id="cardsContainer">
            <div class="card-counter">已生成 <span id="cardCount">0</span> 张卡片</div>
            <div class="cards-container" id="cardsGrid">
                <!-- 卡片将通过JS动态生成 -->
            </div>
        </div>
    </div>

    <script>
        // DOM元素
        const dropArea = document.getElementById('dropArea');
        const fileInput = document.getElementById('fileInput');
        const cardsGrid = document.getElementById('cardsGrid');
        const uploadSection = document.getElementById('uploadSection');
        const cardsContainer = document.getElementById('cardsContainer');
        const cardCount = document.getElementById('cardCount');
        const statusMessage = document.getElementById('statusMessage');

        // 防止默认拖放行为
        ['dragenter', 'dragover', 'dragleave', 'drop'].forEach(eventName => {
            document.addEventListener(eventName, preventDefaults, false);
        });

        function preventDefaults(e) {
            e.preventDefault();
            e.stopPropagation();
        }

        // 拖放区域高亮
        ['dragenter', 'dragover'].forEach(eventName => {
            dropArea.addEventListener(eventName, highlight, false);
        });

        ['dragleave', 'drop'].forEach(eventName => {
            dropArea.addEventListener(eventName, unhighlight, false);
        });

        function highlight() {
            dropArea.classList.add('highlight');
        }

        function unhighlight() {
            dropArea.classList.remove('highlight');
        }

        // 处理文件拖放
        dropArea.addEventListener('drop', handleDrop, false);

        function handleDrop(e) {
            const dt = e.dataTransfer;
            const files = dt.files;
            if (files.length) {
                processFile(files[0]);
            }
        }

        // 处理文件输入
        fileInput.addEventListener('change', function() {
            if (this.files.length) {
                processFile(this.files[0]);
            }
        });

        // 处理文件
        function processFile(file) {
            statusMessage.classList.add('hidden');

            // 检查文件类型
            if (file.type !== 'text/plain') {
                showMessage('错误：请选择TXT文本文件', 'error');
                return;
            }

            const reader = new FileReader();

            reader.onload = function(e) {
                const content = e.target.result;
                try {
                    const cards = parseFileContent(content);
                    if (cards.length > 0) {
                        generateCards(cards);
                        uploadSection.classList.add('hidden');
                        cardsContainer.classList.remove('hidden');
                    } else {
                        showMessage('未在文件中找到任何卡片数据', 'error');
                    }
                } catch (error) {
                    showMessage('解析错误: ' + error.message, 'error');
                }
            };

            reader.onerror = function() {
                showMessage('读取文件出错', 'error');
            };

            reader.readAsText(file);
        }

        // 解析文件内容
        function parseFileContent(content) {
            const lines = content.split('\n');
            const cards = [];

            lines.forEach((line, index) => {
                line = line.trim();
                if (!line) return;

                const parts = line.split('￥');
                if (parts.length < 3) {
                    throw new Error(`第${index+1}行格式错误：缺少分隔符`);
                }

                // 移除首尾空白
                const number = parts[0].trim();
                const question = parts[1].trim();
                const answer = parts.slice(2).join('￥').trim();

                cards.push({ number, question, answer });
            });

            return cards;
        }

        // 生成卡片
        function generateCards(cards) {
            cardsGrid.innerHTML = '';
            cardCount.textContent = cards.length;

            cards.forEach((cardData, index) => {
                const cardElement = document.createElement('div');
                cardElement.className = 'card';
                cardElement.dataset.index = index;

                cardElement.innerHTML = `
                    <div class="card-inner">
                        <div class="card-front">
                            <span class="card-number">${cardData.number}</span>
                            <div class="card-title">问题</div>
                            <div class="card-content">${cardData.question}</div>
                            <div class="flip-notice">点击卡片查看答案</div>
                        </div>
                        <div class="card-back">
                            <span class="card-number">${cardData.number}</span>
                            <div class="card-title">答案</div>
                            <div class="card-content">${cardData.answer}</div>
                            <div class="flip-notice">点击返回问题</div>
                        </div>
                    </div>
                `;

                cardElement.addEventListener('click', function() {
                    this.classList.toggle('flipped');
                });

                cardsGrid.appendChild(cardElement);
            });
        }

        // 显示消息
        function showMessage(message, type = 'info') {
            statusMessage.className = type === 'error' ? 'error-message' : 'status-message';
            statusMessage.textContent = message;
            statusMessage.classList.remove('hidden');
        }

        // 生成示例数据
        function loadSampleData() {
            const sampleData = `
1￥HTML是什么？￥超文本标记语言（Hyper Text Markup Language）
2￥CSS的主要作用是什么？￥用于描述网页的表现样式
3￥JavaScript是什么类型的语言？￥解释型或即时编译型的编程语言
4￥什么是响应式设计？￥网页能够根据屏幕大小自动调整布局
5￥HTTP和HTTPS的主要区别？￥HTTPS在HTTP基础上增加了SSL/TLS加密
6￥什么是闭包？￥有权访问另一个函数作用域中变量的函数
7￥CSS中，em和rem的区别是什么？￥em相对于父元素，rem相对于根元素
8￥let和var的区别是什么？￥let有块级作用域，var是函数作用域
9￥什么是Flex布局？￥CSS3的一种弹性盒布局模型
10￥AJAX全称是什么？￥Asynchronous JavaScript And XML
            `;

            try {
                const cards = parseFileContent(sampleData);
                generateCards(cards);
                uploadSection.classList.add('hidden');
                cardsContainer.classList.remove('hidden');
            } catch (e) {
                showMessage('加载示例数据出错: ' + e.message, 'error');
            }
        }

        // 页面加载时添加示例数据按钮（用于演示）
        document.addEventListener('DOMContentLoaded', function() {
            const sampleButton = document.createElement('button');
            sampleButton.className = 'btn btn-secondary';
            sampleButton.textContent = '加载示例数据';
            sampleButton.onclick = loadSampleData;

            const buttonsContainer = document.querySelector('.upload-section');
            buttonsContainer.appendChild(sampleButton);
        });
    </script>
</body>
</html>