var clientWidth; var navSlideWidth; var mySwiper1 = new Swiper('#swiper-container1', { freeMode: true, // slideToClickedSlide: true, //点击跟随滑动 slidesPerView: 5, //一屏显示的个数 onTap: function () { }, on: { init: function() { navSlideWidth = this.slides.eq(0).css('width'); //导航字数需要统一,每个导航宽度一致 navSum = this.slides[this.slides.length - 1].offsetLeft //最后一个slide的位置 clientWidth = parseInt(this.$wrapperEl.css('width')) //Nav的可视宽度 navWidth = 0 for (i = 0; i < this.slides.length; i++) { navWidth += parseInt(this.slides.eq(i).css('width')) } } } }); mySwiper1.on('tap', function () { clickIndex = this.clickedIndex; mySwiper2.slideTo(clickIndex); }); var mySwiper2 = new Swiper('#swiper-container2', { onSlideChangeStart: function () { // updateNavPosition() }, on: { transitionStart: function() { activeIndex = this.activeIndex navActiveSlideLeft = mySwiper1.slides[activeIndex].offsetLeft //activeSlide距左边的距离 mySwiper1.setTransition(200); if (navActiveSlideLeft < (clientWidth - parseInt(navSlideWidth)) / 2) { mySwiper1.setTranslate(0) } else if (navActiveSlideLeft > navWidth - (parseInt(navSlideWidth) + clientWidth) / 2) { mySwiper1.setTranslate(clientWidth - navWidth) } else { mySwiper1.setTranslate((clientWidth - parseInt(navSlideWidth)) / 2 - navActiveSlideLeft) } $('#swiper-container1 .active-nav').removeClass('active-nav'); mySwiper1.slides.eq(activeIndex).addClass('active-nav'); } } }) function updateNavPosition() { $('#swiper-container1 .active-nav').removeClass('active-nav') var activeNav = $('#swiper-container1 .swiper-slide').eq(mySwiper2.activeIndex).addClass('active-nav'); console.log(activeNav.index()) if (!activeNav.hasClass('swiper-slide-visible')) { if (activeNav.index() > mySwiper1.activeIndex) { var thumbsPerNav = Math.floor(mySwiper1.width / activeNav.width()) - 1 console.log(thumbsPerNav.index()) mySwiper1.slideTo(activeNav.index() - thumbsPerNav) } else { mySwiper1.slideTo(activeNav.index()) } } }