前端css3实现轮播图

以下是一个使用CSS3实现简单轮播图的示例代码：

HTML:

<div class="slider">
  <div class="slides">
    <div class="slide" style="background: url('image1.jpg') no-repeat center center; background-size: cover;"></div>
    <div class="slide" style="background: url('image2.jpg') no-repeat center center; background-size: cover;"></div>
    <div class="slide" style="background: url('image3.jpg') no-repeat center center; background-size: cover;"></div>
  </div>
  <div class="navigation">
    <span class="nav-button active" data-index="0"></span>
    <span class="nav-button" data-index="1"></span>
    <span class="nav-button" data-index="2"></span>
  </div>
</div>

CSS:

.slider {
  position: relative;
  overflow: hidden;
  width: 600px;
  height: 300px;
}
 
.slides {
  width: 300%;
  height: 100%;
  display: flex;
  animation: slide 9s infinite;
}
 
.slide {
  width: 100%;
  flex: 1 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
 
.navigation {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
}
 
.nav-button {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin: 0 5px;
  cursor: pointer;
  background-color: #333;
  opacity: 0.4;
  transition: opacity 0.3s;
}
 
.nav-button.active {
  opacity: 1;
}
 
@keyframes slide {
  0% {
    transform: translateX(0);
  }
  11.1%, 33.3% {
    transform: translateX(0);
  }
  44.4%, 66.6% {
    transform: translateX(-100%);
  }
  77.7%, 100% {
    transform: translateX(-200%);
  }
}

JavaScript (用于导航按钮和轮播逻辑):

document.querySelectorAll('.nav-button').forEach((button, index) => {
  button.addEventListener('click', function() {
    const activeIndex = document.querySelector('.nav-button.active').dataset.index;
    const diff = index - activeIndex;
 
    const slides = document.querySelector('.slides');
    const currentTranslateX = Number(window.getComputedStyle(slides).transform.split('(')[1].split('px')[0]);
    const newTranslateX = currentTranslateX - diff * 100;
 
    slides.style.transform = `translateX(${newTranslateX}%)`;
 
    document.querySelectorAll('.nav-button').forEach(button => button.classList.remove('active'));
    this.classList.add('active');
  });
});

这个示例使用了flex布局来简化轮播图的创建，并使用CSS动画@keyframes slide来控制图片的切换。JavaScript代码用于处理点击导航按钮时的逻辑，包括更新导航按钮的状态和更改轮播图的位置。这个简单的实现没有包括任