swiper自定义分页器

function swiper_pagination(swiper,pagination){
    pagination.on('click',function(events){
        var index = pagination.index(events.target);
        swiper.slideTo(index,1000);
        pagination.removeClass('active').eq(index).addClass('active');
    });
    swiper.on('onSlideChangeStart',function(slider){
        var btnNum = pagination.length,slideNum = slider.activeIndex,eqTo = 0;
        pagination.removeClass('active').eq(slideNum).addClass('active');
    });
};