javascript - 为什么此幻灯片中图像的不透明度没有改变？ (CSS, Javascript)

Question

我正在尝试构建图像轮播。但是，我遇到了不透明动画/过渡的意外行为。
我有一个 .active成功在三个之间转换的类 img .此 .active类(class)增加 opacity: 1; .然而，作为最后img加载到 DOM 中，它保留其初始 opacity: 0; ，即使 .active类被添加到每个 img每六秒，opacity不会改变。
我想这可能是 CSS 问题，但我感谢您的帮助!
Javascript

    const autoSlideshow = () => {
        const slides = document.querySelectorAll('.slides img')
        const slideDelay = 6000
        let currentSlide = 0
    
        slides[currentSlide].classList.add('.active')
    
        const nextSlide = () => {
            slides[currentSlide].classList.remove('.active')
            currentSlide = (currentSlide + 1) % slides.length
            slides[currentSlide].classList.add('.active')
        }
    
        setInterval(nextSlide, slideDelay)
    }
    autoSlideshow()

CSS

.slides img.active {
    opacity: 1;
    transition: opacity 2s ease-in-out;
}
.slides img {
    position: inherit;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
}

HTML

<div class="slides">
   <img src="img/ac62.jpg" alt="couple 1"> 
   <img src="img/b348.jpg" alt="couple 2">
   <img src="img/bk40.jpg" alt="couple 3">
</div>

Answer 1

解决方案

const autoSlideshow = () => {
    const slides = document.querySelectorAll('.slides img')
    const slideDelay = 6000
    let currentSlide = 0

    slides[currentSlide].classList.add('active')

    const nextSlide = () => {
        slides[currentSlide].classList.remove('active')
        currentSlide = (currentSlide + 1) % slides.length
        slides[currentSlide].classList.add('active')
    }

    setInterval(nextSlide, slideDelay)
}
autoSlideshow()

替换 .active与 active