进度条案例

这是为您生成的一个可直接运行的HTML文档,它实现了一个带有动画效果和交互控制的进度条案例。

<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">进度条 · 灵活动画案例</title>
    <!-- 使用优雅柔和的字体 -->
    <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=Inter:opsz,wght@14..32,400;14..32,500;14..32,600&display=swap" rel="stylesheet">
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            background: linear-gradient(145deg, #f9fafc 0%, #eef2f7 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            padding: 1.5rem;
        }
        .card {
            max-width: 720px;
            width: 100%;
            background: rgba(255, 255, 255, 0.75);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: 0 25px 45px -12px rgba(0, 20, 30, 0.15), 0 2px 8px rgba(0,0,0,0.02);
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: 36px;
            padding: 2rem 2rem 2.2rem;
            transition: all 0.2s ease;
        }
        .card-header {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            margin-bottom: 1.2rem;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .card-header h2 {
            font-weight: 600;
            font-size: 1.5rem;
            letter-spacing: -0.01em;
            color: #1d2b3f;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .card-header h2 span {
            background: #d9e2ef;
            padding: 0.15rem 0.8rem;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 500;
            color: #24425c;
            letter-spacing: 0.3px;
        }
        .percentage-badge {
            background: #1d2b3f;
            color: white;
            padding: 0.4rem 1.2rem;
            border-radius: 60px;
            font-size: 1.4rem;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(29, 43, 63, 0.12);
            letter-spacing: -0.5px;
            line-height: 1;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .percentage-badge small {
            font-size: 0.9rem;
            font-weight: 400;
            opacity: 0.8;
        }
        /* 进度条主体 */
        .progress-shell {
            background: #e6ebf2;
            border-radius: 200px;
            height: 32px;
            width: 100%;
            padding: 4px;
            box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(255,255,255,0.6);
            transition: box-shadow 0.1s;
            margin-bottom: 1.8rem;
            cursor: pointer;
            position: relative;
        }
        .progress-bar {
            height: 100%;
            width: 0%;
            background: linear-gradient(90deg, #3b79c9, #62a0e8 70%, #77b7ff);
            border-radius: 200px;
            box-shadow: 0 2px 8px rgba(45, 110, 200, 0.25);
            transition: width 0.25s cubic-bezier(0.2, 0.8, 0.3, 1);
            position: relative;
            overflow: hidden;
            min-width: 8px;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            padding-right: 2px;
        }
        /* 进度条光泽条纹效果 */
        .progress-bar::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(255,255,255,0.45) 0%, rgba(255,255,255,0) 45%);
            border-radius: inherit;
            pointer-events: none;
        }
        /* 追踪点 (支持点击) */
        .progress-rail {
            position: relative;
            margin-bottom: 1.4rem;
        }
        .track-dots {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            font-weight: 500;
            color: #4b5f75;
            padding: 0 6px 0 2px;
            margin-top: 6px;
            user-select: none;
        }
        .track-dots span {
            transition: color 0.2s, font-weight 0.2s;
            background: transparent;
            padding: 2px 8px;
            border-radius: 40px;
        }
        .track-dots span.active {
            color: #1d2b3f;
            font-weight: 600;
            background: rgba(29, 43, 63, 0.06);
        }
        /* 控制区域 */
        .controls {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
            align-items: center;
            margin-top: 0.5rem;
        }
        button {
            border: none;
            background: white;
            font-weight: 500;
            font-size: 0.9rem;
            padding: 0.65rem 1.4rem;
            border-radius: 80px;
            box-shadow: 0 4px 10px -4px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0,0,0,0.02);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #1d2b3f;
            font-family: inherit;
            letter-spacing: 0.2px;
            transition: all 0.18s ease;
            border: 1px solid rgba(255, 255, 255, 0.7);
            cursor: pointer;
            background: rgba(255,255,255,0.8);
            backdrop-filter: blur(4px);
            flex: 1 0 auto;
            justify-content: center;
        }
        button:hover {
            background: #ffffff;
            box-shadow: 0 8px 16px -8px rgba(20, 80, 150, 0.2);
            transform: translateY(-1px);
            border-color: #c2d6ed;
        }
        button:active {
            transform: translateY(1px);
            box-shadow: inset 0 3px 8px rgba(0,0,0,0.04);
        }
        button.primary {
            background: #1d2b3f;
            color: white;
            border: none;
        }
        button.primary:hover {
            background: #2d3f57;
        }
        button.secondary {
            background: rgba(29, 43, 63, 0.05);
        }
        .slider-box {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            flex: 2 1 200px;
            background: rgba(255,255,255,0.5);
            padding: 0.2rem 0.6rem 0.2rem 1rem;
            border-radius: 100px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.2);
        }
        .slider-box input[type="range"] {
            flex: 1;
            height: 6px;
            -webkit-appearance: none;
            background: #d2dbe7;
            border-radius: 20px;
        }
        .slider-box input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 20px;
            height: 20px;
            background: white;
            border-radius: 50%;
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
            border: 2px solid #1d2b3f;
            cursor: pointer;
            transition: 0.1s;
        }
        .slider-box input[type="range"]::-moz-range-thumb {
            width: 20px;
            height: 20px;
            background: white;
            border-radius: 50%;
            border: 2px solid #1d2b3f;
            cursor: pointer;
        }
        .slider-box span {
            min-width: 3rem;
            text-align: center;
            font-weight: 600;
            color: #1d2b3f;
            font-size: 0.9rem;
        }
        .footer-actions {
            display: flex;
            justify-content: flex-end;
            gap: 0.75rem;
            margin-top: 0.5rem;
        }
        .footer-actions button {
            flex: 0 1 auto;
            padding: 0.5rem 1.2rem;
            font-size: 0.85rem;
        }
        .label-hint {
            color: #58718b;
            font-size: 0.8rem;
            margin-top: 0.8rem;
            text-align: right;
            opacity: 0.7;
            letter-spacing: 0.3px;
        }
        /* 触摸友好 */
        @media (max-width: 520px) {
            .card {
                padding: 1.5rem;
            }
            .controls button {
                flex: 1 1 35%;
            }
            .slider-box {
                flex: 1 1 100%;
                order: 4;
            }
        }
    </style>
</head>
<body>
<div class="card">
    <!-- 头部 + 百分比 -->
    <div class="card-header">
        <h2>
            ⚡ 任务进度
            <span>动态</span>
        </h2>
        <div class="percentage-badge" id="percentageDisplay">
            0<small>%</small>
        </div>
    </div>
    <!-- 进度条 (点击任意位置可按比例跳转) -->
    <div class="progress-rail">
        <div class="progress-shell" id="progressShell">
            <div class="progress-bar" id="progressBar" style="width: 0%;"></div>
        </div>
        <!-- 刻度指示 -->
        <div class="track-dots" id="trackDots">
            <span data-value="0">0%</span>
            <span data-value="25">25%</span>
            <span data-value="50">50%</span>
            <span data-value="75">75%</span>
            <span data-value="100">100%</span>
        </div>
    </div>
    <!-- 交互控件区 -->
    <div class="controls">
        <button class="secondary" id="decrBtn">− 10%</button>
        <button class="primary" id="resetBtn">重置</button>
        <button class="secondary" id="incrBtn">+ 10%</button>
        <!-- 滑杆 -->
        <div class="slider-box">
            <input type="range" id="rangeSlider" min="0" max="100" value="0" step="1">
            <span id="sliderValue">0%</span>
        </div>
    </div>
    <!-- 底部辅助操作 -->
    <div class="footer-actions">
        <button id="loadAssistBtn">🎯 载入75%</button>
        <button id="completeBtn">🚀 完成</button>
    </div>
    <div class="label-hint">
        ← 点击进度条快速定位 · 拖动滑杆精确控制 →
    </div>
</div>
<script>
    (function() {
        // DOM 元素
        const progressBar = document.getElementById('progressBar');
        const percentageDisplay = document.getElementById('percentageDisplay');
        const rangeSlider = document.getElementById('rangeSlider');
        const sliderValue = document.getElementById('sliderValue');
        const progressShell = document.getElementById('progressShell');
        const trackDots = document.getElementById('trackDots');
        const incrBtn = document.getElementById('incrBtn');
        const decrBtn = document.getElementById('decrBtn');
        const resetBtn = document.getElementById('resetBtn');
        const loadAssistBtn = document.getElementById('loadAssistBtn');
        const completeBtn = document.getElementById('completeBtn');
        // 当前进度 (0-100)
        let currentProgress = 0;
        // 边界限制
        function clamp(value, min = 0, max = 100) {
            return Math.min(max, Math.max(min, value));
        }
        // 核心更新UI: 进度条宽度、百分比文本、滑杆、滑块数值、刻度高亮
        function updateUI(progress) {
            // 更新宽度
            progressBar.style.width = progress + '%';
            // 更新数字显示 (整数)
            percentageDisplay.innerHTML = Math.round(progress) + '<small>%</small>';
            // 更新滑杆值
            rangeSlider.value = Math.round(progress);
            sliderValue.textContent = Math.round(progress) + '%';
            // 更新刻度高亮: 找到最近的刻度值
            const dotSpans = trackDots.querySelectorAll('span[data-value]');
            let activeValue = null;
            let minDistance = Infinity;
            dotSpans.forEach(span => {
                const val = parseInt(span.dataset.value, 10);
                const dist = Math.abs(progress - val);
                if (dist < 20) {   // 阈值 20，让当前进度附近的高亮更明显 (保留多区间)
                    if (dist < minDistance) {
                        minDistance = dist;
                        activeValue = span;
                    }
                }
            });
            // 如果进度接近某个刻度 (25/50/75等) 高亮它，否则清空所有高亮
            dotSpans.forEach(span => {
                span.classList.remove('active');
            });
            if (activeValue && minDistance <= 10) { // 限制10以内高亮，更干净
                activeValue.classList.add('active');
            } else {
                // 如果精确匹配不到高亮，但可能在25/50/75附近，取消高亮
            }
        }
        // 统一设置进度并更新UI
        function setProgress(newValue, updateSlider = true) {
            currentProgress = clamp(Math.round(newValue));
            updateUI(currentProgress);
        }
        // 增加/减少
        function changeProgress(delta) {
            setProgress(currentProgress + delta);
        }
        // 重置为0
        function resetProgress() {
            setProgress(0);
        }
        // 载入指定百分比 (示例: 75)
        function loadPreset(value) {
            setProgress(value);
        }
        // ---------- 进度条点击跳转 ----------
        function handleProgressClick(event) {
            const rect = progressShell.getBoundingClientRect();
            const offsetX = event.clientX - rect.left;
            const width = rect.width;
            if (width <= 0) return;
            // 计算百分比 (0-100)
            let percent = (offsetX / width) * 100;
            percent = clamp(Math.round(percent));
            setProgress(percent);
        }
        // 绑定点击事件到进度条容器(点击空白/进度条都触发)
        progressShell.addEventListener('click', handleProgressClick);
        // 滑杆事件 (input)
        rangeSlider.addEventListener('input', function(e) {
            const val = parseInt(e.target.value, 10);
            currentProgress = clamp(val);
            updateUI(currentProgress);
        });
        // 按钮事件
        incrBtn.addEventListener('click', () => changeProgress(10));
        decrBtn.addEventListener('click', () => changeProgress(-10));
        resetBtn.addEventListener('click', resetProgress);
        loadAssistBtn.addEventListener('click', () => loadPreset(75));
        completeBtn.addEventListener('click', () => loadPreset(100));
        // 额外: 点击刻度也可以快速定位
        trackDots.addEventListener('click', (e) => {
            const span = e.target.closest('span[data-value]');
            if (!span) return;
            const val = parseInt(span.dataset.value, 10);
            setProgress(val);
        });
        // 初始化显示
        setProgress(0);
        // 添加键盘无障碍： 可以按加减键(演示)
        // 此时不加过多功能。
    })();
</script>
</body>
</html>

进度条的核心交互与操作

您可以通过多种方式直观地控制进度,其核心交互逻辑清晰明了。

• 进度控制方式：您可以通过点击进度条任意位置直接跳转到对应百分比，或使用滑块进行精细调节，页面上的“+10%”、“-10%”、“重置”、“载入75%”和“完成”按钮则提供了快捷操作。
• 视觉反馈机制：进度条会以平滑动画过渡，且当进度接近25%、50%、75%、100%等刻度时，下方的刻度标记会高亮显示，帮助您快速定位进度。
• 状态同步显示：顶部的百分比数字、控制滑块旁的数值以及进度条本身会实时保持同步，让您对所控制的进度一目了然。