背景图满屏轮播js

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

.carousel {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.carousel-image {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.carousel-image.active {
  opacity: 1;
}

const images = document.querySelectorAll('.carousel-image');
let currentIndex = 0;

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

setInterval(showNextImage, 3000);