左右箭头的jquery焦点图自动轮播代码

以下是一个使用 jQuery 实现的左右箭头控制焦点图自动轮播的示例代码：

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>焦点图自动轮播</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }

    .slider {
      position: relative;
      width: 80%;
      margin: 0 auto;
      overflow: hidden;
    }

    .slider ul {
      display: flex;
      list-style: none;
    }

    .slider ul li {
      width: 100%;
      transition: all 0.5s;
    }

    .slider .arrow {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      cursor: pointer;
    }

    .slider .prev {
      left: 10px;
    }

    .slider .next {
      right: 10px;
    }
  </style>
</head>

<body>
  <div class="slider">
    <ul>
      <li><img src="image1.jpg" alt="Image 1"></li>
      <li><img src="image2.jpg" alt="Image 2"></li>
      <li><img src="image3.jpg" alt="Image 3"></li>
    </ul>
    <div class="arrow prev">&#10094;</div>
    <div class="arrow next">&#10095;</div>
  </div>

  <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
  <script>
    $(document).ready(function () {
      let currentIndex = 0;
      const $sliderUl = $('.slider ul');
      const $slides = $sliderUl.find('li');
      const slideCount = $slides.length;

      function moveToSlide(index) {
        $sliderUl.css('transform', `translateX(-${index * 100}%)`);
        currentIndex = index;
      }

      $('.prev').click(function () {
        let newIndex = currentIndex - 1;
        if (newIndex < 0) {
          newIndex = slideCount - 1;
        }
        moveToSlide(newIndex);
      });

      $('.next').click(function () {
        let newIndex = currentIndex + 1;
        if (newIndex >= slideCount) {
          newIndex = 0;
        }
        moveToSlide(newIndex);
      });

      // 自动轮播
      setInterval(function () {
        let newIndex = currentIndex + 1;
        if (newIndex >= slideCount) {
          newIndex = 0;
        }
        moveToSlide(newIndex);
      }, 3000);
    });
  </script>
</body>

</html>

基础概念：