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/* Content Slider — frontend.js */ |
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( function () { |
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function initSlider( wrap ) { |
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const track = wrap.querySelector( '.bkcs-track' ); |
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const slides = track ? Array.from( track.querySelectorAll( '.bkcs-slide' ) ) : []; |
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if ( slides.length < 2 ) return; |
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|
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const autoplay = wrap.dataset.autoplay === '1'; |
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const speed = parseInt( wrap.dataset.speed ) || 4000; |
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const isSlide = wrap.classList.contains( 'bkcs-transition-slide' ); |
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|
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let current = 0; |
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let timer = null; |
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|
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/* Dots */ |
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const dotsWrap = wrap.querySelector( '.bkcs-dots' ); |
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if ( dotsWrap ) { |
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slides.forEach( (_, i) => { |
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const dot = document.createElement('button'); |
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dot.className = 'bkcs-dot' + (i===0?' bkcs-dot-active':''); |
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dot.addEventListener('click', () => { clearInterval(timer); goTo(i); startAutoplay(); }); |
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dotsWrap.appendChild(dot); |
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}); |
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} |
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function updateDots() { |
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wrap.querySelectorAll('.bkcs-dot').forEach((d,i)=>d.classList.toggle('bkcs-dot-active',i===current)); |
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} |
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|
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function goTo(idx) { |
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const prev = current; |
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current = (idx + slides.length) % slides.length; |
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if (isSlide) { |
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slides[prev].classList.add('bkcs-leaving'); |
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slides[prev].classList.remove('bkcs-active'); |
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slides[current].classList.add('bkcs-active'); |
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setTimeout(()=>slides[prev].classList.remove('bkcs-leaving'), 600); |
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} else { |
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slides[prev].classList.remove('bkcs-active'); |
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slides[current].classList.add('bkcs-active'); |
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} |
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updateDots(); |
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} |
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|
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const prevBtn = wrap.querySelector('.bkcs-prev'); |
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const nextBtn = wrap.querySelector('.bkcs-next'); |
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if (prevBtn) prevBtn.addEventListener('click', ()=>{ clearInterval(timer); goTo(current-1); startAutoplay(); }); |
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if (nextBtn) nextBtn.addEventListener('click', ()=>{ clearInterval(timer); goTo(current+1); startAutoplay(); }); |
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|
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/* Touch */ |
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let tx = 0; |
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wrap.addEventListener('touchstart', e=>{tx=e.changedTouches[0].clientX;},{passive:true}); |
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wrap.addEventListener('touchend', e=>{ const dx=e.changedTouches[0].clientX-tx; if(Math.abs(dx)>50){clearInterval(timer);goTo(dx<0?current+1:current-1);startAutoplay();}},{passive:true}); |
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|
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wrap.addEventListener('mouseenter', ()=>clearInterval(timer)); |
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wrap.addEventListener('mouseleave', startAutoplay); |
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|
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function startAutoplay() { |
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if (!autoplay) return; |
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clearInterval(timer); |
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timer = setInterval(()=>goTo(current+1), speed); |
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} |
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startAutoplay(); |
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} |
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|
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function init() { |
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document.querySelectorAll('.bkcs-wrap[data-autoplay]').forEach(initSlider); |
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} |
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|
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if (document.readyState==='loading') document.addEventListener('DOMContentLoaded',init); |
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else init(); |
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}() ); |
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