ऑटोप्ले कैरसेल

यह कैरसेल, सीएसएस स्क्रोल स्नैप का इस्तेमाल करके आसान और बेहतर परफ़ॉर्म करने वाले स्लाइड ट्रांज़िशन बनाता है. इनसे लेआउट शिफ़्ट नहीं होता.

इस कैरसेल को कई तरीकों से नेविगेट किया जा सकता है: नेविगेशन कंट्रोल के साथ-साथ, यह कीबोर्ड नेविगेशन और स्वाइपिंग की सुविधा देता है. उपयोगकर्ता के कैरसेल में माउसओवर करने पर, कैरसेल अपने-आप ट्रांज़िशन बंद हो जाता है, ताकि उसे आसानी से इस्तेमाल किया जा सके. साथ ही, उसे आसानी से पढ़ा जा सके.

<div id="carousel">
  <div id="slide-container">
    <div class="slide" data-slideIndex="0">
      <div class="slide-banner">Tour the Empire State Building! <a href="">Buy tickets now.</a></div>
      <img width="1200" height="600" src="./newyork.jpg">
    </div>
    <div class="slide" data-slideIndex="1">
      <div class="slide-banner">Ride the Shinkansen! <a href="">Buy tickets now.</a></div>
      <img width="1200" height="600" src="./tokyo.jpg">
    </div>
    <div class="slide" data-slideIndex="2">
      <div class="slide-banner">Discover relaxation! <a href="">Buy tickets now.</a></div>
      <img width="1200" height="600" src="./beach.jpg">
    </div>
    <div class="slide" data-slideIndex="3">
      <div class="slide-banner">See penguins! <a href="">Buy tickets now.</a></div>
      <img width="1200" height="600" src="./penguins.jpg">
    </div>
    <div class="slide" data-slideIndex="4">
      <div class="slide-banner">Take a ride on the wheel! <a href="">Buy tickets now.</a></div>
      <img width="1200" height="600" src="./wheel.jpg">
    </div>
  </div>
  <div id="back-button" class="arrow back">←</div>
  <div id="forward-button" class="arrow forward">→</div>
  <div class="slide-indicators">
    <div class="slide-indicator active"></div>
    <div class="slide-indicator"></div>
    <div class="slide-indicator"></div>
    <div class="slide-indicator"></div>
    <div class="slide-indicator"></div>
  </div>
</div>

        #carousel {
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    margin: 0 auto;
    position: relative;
}  
.slide-indicators {
    display: flex;
    justify-content: center;
}
.slide-indicator {
    height: 44px;
    width: 50px;
    display: flex;
    justify-items: center;
    cursor: pointer;
}
.slide-indicator:after {
    content: "";
    background-color: #878787;
    height: 10px;
    margin-top: 10px;
    width: 40px;
}
.slide-indicator.active:after,
.slide-indicator:hover:after {
    background-color: #000;
}
.slide-banner {
    background-color: #000;
    color: #fff;
    position: absolute;
    left: 0;
    bottom: 20px;
    padding: 15px;
    font-size: 2.5vw;
}
.slide-banner a {
    color: #fff;
}
#slide-container {
    scroll-snap-type: x mandatory;
    overflow-x: scroll;
    overflow-y: hidden;
    display: flex;
    align-items: center;
    height: 100%;
    gap: 10px;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}
.slide {
    scroll-snap-align: center;
    position: relative;
    min-width: 100%;
    padding-top: 50%;
}
.slide img {
    height: 100%;
    width: auto;
    position: absolute;
    top: 0;
    left: 0;
}
.arrow {
    color: #fff;
    height: 20px;
    width: 20px;
    background-color: #000;
    position: absolute;
    padding: 10px;
    opacity: .3;
    cursor: pointer;
}
.arrow.back {
    left: 10px;
    top: 10px;
}
.arrow.forward {
    right: 10px;
    top: 10px;
}
.arrow:hover {
    opacity: 1;
}
        

        function autoplayCarousel() {
    const carouselEl = document.getElementById("carousel");
    const slideContainerEl = carouselEl.querySelector("#slide-container");
    const slideEl = carouselEl.querySelector(".slide");
    let slideWidth = slideEl.offsetWidth;
    // Add click handlers
    document.querySelector("#back-button")
        .addEventListener("click", () => navigate("backward"));
    document.querySelector("#forward-button")
        .addEventListener("click", () => navigate("forward"));
    document.querySelectorAll(".slide-indicator")
        .forEach((dot, index) => {
            dot.addEventListener("click", () => navigate(index));
            dot.addEventListener("mouseenter", () => clearInterval(autoplay));
        });
    // Add keyboard handlers
    document.addEventListener('keydown', (e) => {
        if (e.code === 'ArrowLeft') {
            clearInterval(autoplay);
            navigate("backward");
        } else if (e.code === 'ArrowRight') {
            clearInterval(autoplay);
            navigate("forward");
        }
    });
    // Add resize handler
    window.addEventListener('resize', () => {
        slideWidth = slideEl.offsetWidth;
    });
    // Autoplay
    const autoplay = setInterval(() => navigate("forward"), 3000);
    slideContainerEl.addEventListener("mouseenter", () => clearInterval(autoplay));
    // Slide transition
    const getNewScrollPosition = (arg) => {
        const gap = 10;
        const maxScrollLeft = slideContainerEl.scrollWidth - slideWidth;
        if (arg === "forward") {
            const x = slideContainerEl.scrollLeft + slideWidth + gap;
            return x <= maxScrollLeft ? x : 0;
        } else if (arg === "backward") {
            const x = slideContainerEl.scrollLeft - slideWidth - gap;
            return x >= 0 ? x : maxScrollLeft;
        } else if (typeof arg === "number") {
            const x = arg * (slideWidth + gap);
            return x;
        }
    }
    const navigate = (arg) => {
        slideContainerEl.scrollLeft = getNewScrollPosition(arg);
    }
    // Slide indicators
    const slideObserver = new IntersectionObserver((entries, observer) => {
        entries.forEach(entry => {
            if (entry.isIntersecting) {
                const slideIndex = entry.target.dataset.slideindex;
                carouselEl.querySelector('.slide-indicator.active').classList.remove('active');
                carouselEl.querySelectorAll('.slide-indicator')[slideIndex].classList.add('active');
            }
        });
    }, { root: slideContainerEl, threshold: .1 });
    document.querySelectorAll('.slide').forEach((slide) => {
        slideObserver.observe(slide);
    });
}
autoplayCarousel();