https://www.sponichi.co.jp/js/parts.js

1$(function(){
2  if($(".navi_horizontal_list").length > 0) {
3    var $index = $('.navi_horizontal_list').find('a.active').index('.navi_horizontal_list a');
4    $index = $index > 15 ? $index : 0;
5    var swiper_navi = new Swiper('.navi_horizontal_list', {
6        initialSlide: $index,
7        slidesPerView: 'auto',
8        slideClass: 'slide',
9        paginationClickable: true,
10        visibilityFullFit: true,
11        autoResize: true,
12        pagination: '.swiper-pagination',
13        nextButton: '.swiper-button-next',
14        prevButton: '.swiper-button-prev'
15    });
16  }
17});