HTML, CSS, and jQuery: A technical guide to implementing scrolling display of images

HTML, CSS and jQuery: Technical Guide to Implementing Image Scroll Display

Introduction:
In modern web design, image scrolling display is a common interactive methods that can attract users’ attention and provide a better user experience. This article will introduce how to use HTML, CSS and jQuery to implement image scrolling display, and provide specific code examples.

1. HTML structure:
Before we start, we need to determine the HTML structure of the image scrolling display. Usually, we use a list to contain all images. Each image is placed in a list item. The following is a simple HTML structure example:

<div class="slider">
  <ul class="slider-wrapper">
    <li class="slide">
      <img src="/static/imghw/default1.png"  data-src="image1.jpg"  class="lazy" alt="Image 1">
    </li>
    <li class="slide">
      <img src="/static/imghw/default1.png"  data-src="image2.jpg"  class="lazy" alt="Image 2">
    </li>
    <li class="slide">
      <img src="/static/imghw/default1.png"  data-src="image3.jpg"  class="lazy" alt="Image 3">
    </li>
  </ul>
</div>

2. CSS styles:
Next, we need to add some basic CSS styles for the scrolling display of images. These styles will affect the layout and presentation of the image. The following is a basic CSS style example:

.slider {
  width: 500px; /* 设置图片展示区域的宽度 */
  height: 300px; /* 设置图片展示区域的高度 */
  overflow: hidden; /* 隐藏超出尺寸的图片 */
  position: relative; /* 设置相对定位 */
}

.slider-wrapper {
  width: 100%; /* 设置图片列表的宽度 */
  height: 100%; /* 设置图片列表的高度 */
  display: flex; /* 使用flex布局 */
  transition: transform 0.5s ease; /* 设置滚动效果的过渡动画 */
}

.slide {
  width: 100%; /* 设置每个列表项的宽度 */
  height: 100%; /* 设置每个列表项的高度 */
  flex-shrink: 0; /* 防止图片缩小 */
}

.slide img {
  width: 100%; /* 设置图片的宽度 */
  height: 100%; /* 设置图片的高度 */
}

3. jQuery to implement scrolling:
Using jQuery’s animate() function, we can achieve a smooth scrolling effect of the image list. The following is a simple jQuery code example:

$(document).ready(function() {
  var sliderWrapper = $('.slider-wrapper');
  var slides = $('.slide');
  var slideWidth = slides.first().outerWidth(); // 获取每个图片列表项的宽度

  // 设置图片列表的总宽度
  sliderWrapper.css('width', slideWidth * slides.length);

  function slide() {
    // 获取当前图片列表的左偏移量
    var currentLeft = sliderWrapper.position().left;

    // 判断是否到达最后一张图片，如果是则滚动到第一张图片
    if (currentLeft <= -(slideWidth * (slides.length - 1))) {
      sliderWrapper.css('left', 0);
    } else {
      // 执行滚动动画
      sliderWrapper.animate({ 'left': currentLeft - slideWidth }, 500);
    }

    // 设置定时器，自动滚动图片
    setTimeout(slide, 3000);
  }

  // 启动自动滚动
  setTimeout(slide, 3000);
});

In the above code, we use a timer to achieve the automatic scrolling effect, and implement the scrolling animation of the image list through the animate() function. Every 3 seconds, the picture list will scroll left by the width of one picture until it reaches the last picture, then returns to the first picture.

Conclusion:
Through the combination of HTML, CSS and jQuery, we can achieve a simple and dynamic image scrolling display effect. I hope the technical guidance and code examples provided in this article will be helpful for you to apply this interactive effect in your web design. Have fun displaying beautiful images on your web pages!

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