基于HTML、CSS和JavaScript构建全屏触摸滑动视频播放器

<div class="slider-container">
  <div class="slide">
    <h2>Airpods</h2>
    <h4>$199</h4>
    <video width="320" height="240" controls>
      <source src="https://player.vimeo.com/external/367564948.sd.mp4?s=d969af3ae466e775628a8d281105fd03a8df12ae&profile_id=165&oauth2_token_id=57447761" type="video/mp4"/>
      您的浏览器不支持视频标签。
    </video>
    <a href="#" class="btn">Buy Now</a>
  </div>
  <div class="slide">
    <h2>iPhone 12</h2>
    <h4>$799</h4>
    <video width="320" height="240" controls>
      <source src="https://player.vimeo.com/external/334344435.sd.mp4?s=d367341a941ffa97781ade70e4f4a28f4a1a5fc8&profile_id=165&oauth2_token_id=57447761" type="video/mp4"/>
      您的浏览器不支持视频标签。
    </video>
    <a href="#" class="btn">Buy Now</a>
  </div>
  <div class="slide">
    <h2>iPad</h2>
    <h4>$599</h4>
    <video width="320" height="240" controls>
      <source src="https://player.vimeo.com/external/369639344.sd.mp4?s=b892fce959245aa4ae7ab08bc4b1af2766acdf4e&profile_id=165&oauth2_token_id=57447761" type="video/mp4"/>
      您的浏览器不支持视频标签。
    </video>
    <a href="#" class="btn">Buy Now</a>
  </div>
</div>

@import url('https://fonts.googleapis.com/css2?family=Open+Sans&display=swap');

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  font-family: 'Open Sans', sans-serif;
  height: 100%;
  width: 100%;
  overflow: hidden; /* 防止页面滚动 */
  background-color: #333;
  color: #fff;
  line-height: 1.7;
}

.slider-container {
  height: 100vh; /* 占据整个视口高度 */
  display: inline-flex; /* 允许所有滑块并排显示 */
  overflow: hidden; /* 隐藏超出容器的滑块 */
  transform: translateX(0); /* 初始位置 */
  transition: transform 0.3s ease-out; /* 滑动动画效果 */
  cursor: grab; /* 默认鼠标样式 */
}

.slide {
  max-height: 100vh;
  width: 100vw; /* 每个滑块占据整个视口宽度 */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  user-select: none; /* 防止文本被选中 */
}

/* 关键调整：为视频元素定义样式 */
.slide video {
  max-width: 100%;
  max-height: 60%; /* 限制视频最大高度 */
  transition: transform 0.3s ease-in-out; /* 拖拽时的缩放动画 */
  object-fit: contain; /* 确保视频内容完整显示 */
}

.slide h2 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.slide h4 {
  font-size: 1.3rem;
}

.btn {
  background-color: #444;
  color: #fff;
  text-decoration: none;
  padding: 1rem 1.5rem;
  margin-top: 1rem; /* 按钮与视频间距 */
}

.grabbing {
  cursor: grabbing; /* 拖拽时的鼠标样式 */
}

.grabbing .slide video { /* 关键调整：拖拽时视频的缩放效果 */
  transform: scale(0.9);
}

const slider = document.querySelector('.slider-container');
const slides = Array.from(document.querySelectorAll('.slide'));

let isDragging = false,
  startPos = 0,
  currentTranslate = 0,
  prevTranslate = 0,
  animationID = 0,
  currentIndex = 0;

slides.forEach((slide, index) => {
  // 获取视频元素，并阻止其默认的拖拽行为
  const slideVideo = slide.querySelector('video');
  if (slideVideo) { // 确保视频元素存在
    slideVideo.addEventListener('dragstart', (e) => e.preventDefault());
  }

  // 绑定触摸事件
  slide.addEventListener('touchstart', touchStart(index));
  slide.addEventListener('touchend', touchEnd);
  slide.addEventListener('touchmove', touchMove);

  // 绑定鼠标事件
  slide.addEventListener('mousedown', touchStart(index));
  slide.addEventListener('mouseup', touchEnd);
  slide.addEventListener('mouseleave', touchEnd); // 鼠标离开时结束拖拽
  slide.addEventListener('mousemove', touchMove);
});

// 禁用右键菜单，防止干扰拖拽操作
window.oncontextmenu = function (event) {
  event.preventDefault();
  event.stopPropagation();
  return false;
};

// 触摸/鼠标按下事件处理
function touchStart(index) {
  return function (event) {
    currentIndex = index;
    startPos = getPositionX(event); // 记录起始X坐标
    isDragging = true; // 设置拖拽状态

    // 启动动画循环，实现平滑拖拽
    animationID = requestAnimationFrame(animation);
    slider.classList.add('grabbing'); // 添加拖拽时的鼠标样式
  };
}

// 触摸/鼠标抬起事件处理
function touchEnd() {
  isDragging = false; // 结束拖拽状态
  cancelAnimationFrame(animationID); // 停止动画循环

  const movedBy = currentTranslate - prevTranslate; // 计算移动距离

  // 根据移动距离判断是否切换到下一张/上一张滑块
  if (movedBy < -100 && currentIndex < slides.length - 1) {
    currentIndex += 1;
  }
  if (movedBy > 100 && currentIndex > 0) {
    currentIndex -= 1;
  }

  setPositionByIndex(); // 设置滑块到最终位置
  slider.classList.remove('grabbing'); // 移除拖拽时的鼠标样式
}

// 触摸/鼠标移动事件处理
function touchMove(event) {
  if (isDragging) {
    const currentPosition = getPositionX(event);
    currentTranslate = prevTranslate + currentPosition - startPos; // 更新当前平移量
  }
}

// 获取事件的X坐标（区分触摸和鼠标事件）
function getPositionX(event) {
  return event.type.includes('mouse') ? event.pageX : event.touches[0].clientX;
}

// 动画循环，持续更新滑块位置
function animation() {
  setSliderPosition();
  if (isDragging) {
    requestAnimationFrame(animation);
  }
}

// 设置滑块的CSS transform属性
function setSliderPosition() {
  slider.style.transform = `translateX(${currentTranslate}px)`;
}

// 根据当前索引设置滑块位置
function setPositionByIndex() {
  currentTranslate = currentIndex * -window.innerWidth; // 计算目标平移量
  prevTranslate = currentTranslate; // 更新上一个平移量
  setSliderPosition(); // 应用位置
}