js轮播图插件实例

<div class="carousel">
  <div class="slides">
    <img src="image1.jpg" alt="Image 1">
    <img src="image2.jpg" alt="Image 2">
    <img src="image3.jpg" alt="Image 3">
  </div>
  <button class="prev">Prev</button>
  <button class="next">Next</button>
</div>

.carousel {
  position: relative;
  width: 500px;
  height: 300px;
  overflow: hidden;
}

.slides {
  display: flex;
  transition: transform 0.5s ease-in-out;
}

.slides img {
  width: 100%;
  height: auto;
}

.prev,
.next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  padding: 10px;
  background-color: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  cursor: pointer;
}

.prev {
  left: 10px;
}

.next {
  right: 10px;
}

const slides = document.querySelectorAll('.slides img');
const prevBtn = document.querySelector('.prev');
const nextBtn = document.querySelector('.next');
let currentIndex = 0;

function showSlide(index) {
  const offset = -index * 500;
  document.querySelector('.slides').style.transform = `translateX(${offset}px)`;
}

prevBtn.addEventListener('click', () => {
  currentIndex--;
  if (currentIndex < 0) {
    currentIndex = slides.length - 1;
  }
  showSlide(currentIndex);
});

nextBtn.addEventListener('click', () => {
  currentIndex++;
  if (currentIndex >= slides.length) {
    currentIndex = 0;
  }
  showSlide(currentIndex);
});

// 自动轮播
setInterval(() => {
  currentIndex++;
  if (currentIndex >= slides.length) {
    currentIndex = 0;
  }
  showSlide(currentIndex);
}, 3000);