图片放大缩小轮播js源代码

以下是一个简单的图片放大缩小轮播的 JavaScript 源代码示例：

<!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>图片放大缩小轮播</title>
  <style>
    #image-container {
      width: 500px;
      height: 400px;
      overflow: hidden;
      position: relative;
    }

    #image-container img {
      width: 100%;
      height: 100%;
      position: absolute;
      transition: all 0.5s ease;
    }
  </style>
</head>

<body>
  <div id="image-container">
    <img src="image1.jpg" alt="Image 1" id="carousel-image">
  </div>
  <button onclick="zoomIn()">放大</button>
  <button onclick="zoomOut()">缩小</button>
  <button onclick="nextImage()">下一张</button>
  <button onclick="prevImage()">上一张</button>

  <script>
    let images = ["image1.jpg", "image2.jpg", "image3.jpg"];
    let currentIndex = 0;
    let scale = 1;

    function updateImage() {
      const image = document.getElementById('carousel-image');
      image.src = images[currentIndex];
      image.style.transform = `scale(${scale})`;
    }

    function zoomIn() {
      scale += 0.1;
      updateImage();
    }

    function zoomOut() {
      if (scale > 0.1) {
        scale -= 0.1;
        updateImage();
      }
    }

    function nextImage() {
      currentIndex = (currentIndex + 1) % images.length;
      updateImage();
    }

    function prevImage() {
      currentIndex = (currentIndex - 1 + images.length) % images.length;
      updateImage();
    }
  </script>
</body>

</html>

基础概念：