swiper 滑动插件，小屏单个显示滑动，大屏全部显示

    var currSwiperIndex=0;
    function widthHandle(){
        var level = widthLevel();
        if(level==1){
            //单个显示，滑动
            if(mySwiper==null){
                mySwiper = new Swiper('.swiper-container',{
                    initialSlide: currSwiperIndex,
                });
            }
        }else{
            //4个都显示
            if(mySwiper!=null){
                currSwiperIndex = mySwiper.activeIndex;
                mySwiper.destroy(true,true);
                mySwiper = null;
            }
            var width = $(".container").width();
            $(".gonggao").css("width",width/4+"px");
        }
    }