無限スクロールのカルーセルのサンプル
<div class="carousel-outer">
<div class="carousel">
<div class="carousel__section">
<img src="https://placehold.jp/ccffff/000000/960x540.png?text=Section1">
</div>
<div class="carousel__section">
<img src="https://placehold.jp/ffccff/000000/960x540.png?text=Section2">
</div>
<div class="carousel__section">
<img src="https://placehold.jp/ccffcc/000000/960x540.png?text=Section3">
</div>
</div>
<button class="carousel__button-left">←</button>
<button class="carousel__button-right">→</button>
</div>
img {
max-width: 100%;
height: auto;
}
.carousel-outer {
position: relative;
overflow: hidden;
width: 100%;
max-width: 960px;
}
.carousel {
display: flex;
transform: translateX(0);
}
.carousel__section {
min-width: 100%;
}
.carousel__button-left,
.carousel__button-right {
position: absolute;
top: 50%;
transform: translateY(-50%);
cursor: pointer;
}
.carousel__button-left {
left: 5%;
}
.carousel__button-right {
right: 5%;
}
let current = 1
let isAnimation = false;
const carousel = document.querySelector('.carousel')
const carousels = document.querySelectorAll('.carousel__section')
const carouselLen = carousels.length
const lastCarousel = carouselLen + 1
const total = carouselLen + 2;
const newOrder = [];
newOrder.push(carousels[carouselLen - 1].outerHTML)
carousels.forEach((section) => {
newOrder.push(section.outerHTML)
})
newOrder.push(carousels[0].outerHTML)
carousel.innerHTML = newOrder.join('')
function showSection() {
isAnimation = true;
carousel.style.transform = `translateX(${-current * 100}%)`;
}
function prevSection() {
if (isAnimation) return
current = current === 0 ? carouselLen + 1 : current - 1;
showSection()
}
function nextSection() {
if (isAnimation) return
current = (current + 1) % (carouselLen + 2);
showSection()
}
const btnLeft = document.querySelector('.carousel__button-left')
const btnRight = document.querySelector('.carousel__button-right')
btnLeft.addEventListener('click', prevSection)
btnRight.addEventListener('click', nextSection)
carousel.addEventListener('transitionend', () => {
if (current === carouselLen + 1) {
current = 1
} else if (current === 0) {
current = carouselLen
}
carousel.classList.add('no-transition')
carousel.style.transform = `translateX(${-current * 100}%)`
setTimeout(() => {
carousel.classList.remove('no-transition')
isAnimation = false
}, 20)
})
元記事を表示する