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| /* 这里的任何JavaScript将为所有用户在每次页面加载时加载。 */
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| /* ===== 首页轮播图 ===== */
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| (function () {
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| function initHomeCarousel() {
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| var carousel = document.getElementById('home-carousel');
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| if (!carousel) return;
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|
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| var items = carousel.querySelectorAll('.home-carousel-item');
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| var dotsBox = document.getElementById('home-carousel-dots');
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| var prevBtn = document.getElementById('home-carousel-prev');
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| var nextBtn = document.getElementById('home-carousel-next');
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| if (!items.length || !dotsBox || !prevBtn || !nextBtn) return;
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|
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| var current = 0;
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| var timer = null;
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|
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| items.forEach(function (_, i) {
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| var dot = document.createElement('span');
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| dot.className = 'home-carousel-dot' + (i === 0 ? ' active' : '');
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| dot.addEventListener('click', function () { goTo(i); });
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| dotsBox.appendChild(dot);
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| });
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| var dots = dotsBox.querySelectorAll('.home-carousel-dot');
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|
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| function goTo(index) {
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| items[current].classList.remove('active');
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| dots[current].classList.remove('active');
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| current = (index + items.length) % items.length;
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| items[current].classList.add('active');
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| dots[current].classList.add('active');
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| }
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|
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| function next() { goTo(current + 1); }
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| function prev() { goTo(current - 1); }
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|
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| function startAuto() {
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| stopAuto();
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| timer = setInterval(next, 5000);
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| }
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| function stopAuto() {
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| if (timer) { clearInterval(timer); timer = null; }
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| }
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|
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| nextBtn.addEventListener('click', function () { next(); startAuto(); });
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| prevBtn.addEventListener('click', function () { prev(); startAuto(); });
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| carousel.addEventListener('mouseenter', stopAuto);
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| carousel.addEventListener('mouseleave', startAuto);
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|
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| startAuto();
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| }
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|
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| if (document.readyState === 'loading') {
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| document.addEventListener('DOMContentLoaded', initHomeCarousel);
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| } else {
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| initHomeCarousel();
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| }
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| })();
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