jQuery实现带有缩略图的相册导航特效

以下是一个简单的jQuery实现带有缩略图的相册导航特效的示例代码：

HTML结构：

<div class="gallery">
  <div class="main-image">
    <img src="image1.jpg" alt="Image 1">
  </div>
  <div class="thumbnails">
    <a href="image1.jpg"><img src="thumbnail1.jpg" alt="Thumbnail 1"></a>
    <a href="image2.jpg"><img src="thumbnail2.jpg" alt="Thumbnail 2"></a>
    <a href="image3.jpg"><img src="thumbnail3.jpg" alt="Thumbnail 3"></a>
    <a href="image4.jpg"><img src="thumbnail4.jpg" alt="Thumbnail 4"></a>
  </div>
</div>

CSS样式：

.gallery {
  position: relative;
  width: 100%;
  height: 500px;
}

.main-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.main-image img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 100%;
  max-height: 100%;
}

.thumbnails {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100px;
  background-color: #f2f2f2;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
}

.thumbnails a {
  display: inline-block;
  width: 100px;
  height: 100%;
  text-align: center;
  vertical-align: middle;
}

.thumbnails img {
  max-width: 100%;
  max-height: 100%;
  vertical-align: middle;
  cursor: pointer;
  opacity: 0.5;
}

.thumbnails img:hover {
  opacity: 1;
}

jQuery代码：

$(document).ready(function() {
  // 初始化
  $('.thumbnails a:first-child img').css('opacity', 1);

  // 点击缩略图
  $('.thumbnails a').click(function(e) {
    e.preventDefault();

    // 切换图片
    var mainImage = $('.main-image img');
    var newImageSrc = $(this).attr('href');
    mainImage.attr('src', newImageSrc);

    // 修改缩略图透明度
    $('.thumbnails img').css('opacity', 0.5);
    $(this).find('img').css('opacity', 1);
  });

  // 滚动缩略图
  $('.thumbnails').on('scroll', function() {
    var scrollLeft = $(this).scrollLeft();
    var thumbnailsWidth = $(this).outerWidth();
    var thumbnailsContainerWidth = $(this).prop('scrollWidth');
    var maxScrollLeft = thumbnailsContainerWidth - thumbnailsWidth;

    if (scrollLeft == 0) {
      $('.thumbnails-arrow-left').removeClass('active');
    } else {
      $('.thumbnails-arrow-left').addClass('active');
    }

    if (scrollLeft == maxScrollLeft) {
      $('.thumbnails-arrow-right').removeClass('active');
    } else {
      $('.thumbnails-arrow-right').addClass('active');
    }
  });

  // 点击缩略图左箭头
  $('.thumbnails-arrow-left').click(function() {
    var scrollLeft = $('.thumbnails').scrollLeft();
    var newScrollLeft = scrollLeft - 100;
    $('.thumbnails').animate({scrollLeft: newScrollLeft}, 500);
  });

  // 点击缩略图右箭头
  $('.thumbnails-arrow-right').click(function() {
    var scrollLeft = $('.thumbnails').scrollLeft();
    var newScrollLeft = scrollLeft + 100;
    $('.thumbnails').animate({scrollLeft: newScrollLeft}, 500);
  });
});

注：上述示例代码仅为示范，具体实现方式可能因具体需求而异。