js手指滑动进度条

<div class="progress-container">
    <div class="progress-bar" id="progressBar"></div>
</div>

.progress-container {
    width: 100%;
    height: 20px;
    background-color: #eee;
    position: relative;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background-color: #007bff;
    position: absolute;
    top: 0;
    left: 0;
}

const progressBar = document.getElementById('progressBar');
let startX = 0;
let currentX = 0;

// 获取进度条容器的宽度
const containerWidth = document.querySelector('.progress-container').offsetWidth;

progressBar.addEventListener('touchstart', (e) => {
    startX = e.touches[0].clientX;
});

progressBar.addEventListener('touchmove', (e) => {
    currentX = e.touches[0].clientX;
    const deltaX = currentX - startX;
    let newWidth = Math.max(0, Math.min(containerWidth, progressBar.offsetWidth + deltaX));
    progressBar.style.width = newWidth + 'px';
    // 可以根据newWidth/containerWidth计算进度百分比
});

progressBar.addEventListener('touchend', () => {
    // 可以在这里处理滑动结束后的逻辑，比如更新播放位置等
});