js图片自动左右切换

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>图片自动切换</title>
<style>
  #slider {
    width: 600px;
    overflow: hidden;
    position: relative;
  }
  #slider img {
    width: 100%;
    display: none;
  }
  #slider img.active {
    display: block;
  }
</style>
</head>
<body>

<div id="slider">
  <img src="image1.jpg" alt="Image 1" class="active">
  <img src="image2.jpg" alt="Image 2">
  <img src="image3.jpg" alt="Image 3">
</div>

<script>
  const images = document.querySelectorAll('#slider img');
  let currentIndex = 0;

  function showNextImage() {
    images[currentIndex].classList.remove('active');
    currentIndex = (currentIndex + 1) % images.length;
    images[currentIndex].classList.add('active');
  }

  setInterval(showNextImage, 3000); // 每3秒切换一次图片
</script>

</body>
</html>

function preloadImages(images) {
  images.forEach(img => {
    const newImg = new Image();
    newImg.src = img.src;
  });
}

preloadImages(images);

setInterval(showNextImage, 5000); // 改为每5秒切换一次