//初始化swiper

var index=0;

if(sessionStorage.getItem("index")){

index=sessionStorage.getItem("index");

}

var swiper = new Swiper('.swiper-container', {

nextButton: '.swiper-button-next',

prevButton: '.swiper-button-prev',

initialSlide: index,//设定初始化时slide的索引

centeredSlides: true

});

//点击页面链接跳转前保存导航当前的index值

$("a").bind("click",function(){

var i= $(".swiper-slide-active").index();

sessionStorage.setItem("index",i);

})