js中使用swiper时自定义分页器

当分页器是多张不同的图片切换时，我们应该怎么去自定义呢？
重点是将p agi nat ion的type 属性改为 custom，然后写自己的代码就行。
具体代码如下：

var mySwiper = new Swiper(".swiper-container", {
    // 如果需要分页器
    pagination: {
      el: ".swiper-pagination",
      type: "custom", //分页器类型 自定义
      clickable: true, //此参数设置为true时，点击分页器的指示点分页器会控制Swiper切换
      //自定义特殊类型分页器，当分页器类型设置为自定义时可用。
      renderCustom: function (swiper, current, total) {
        var customPaginationHtml = "";
        for (var i = 0; i &lt; total; i++) {
          //判断哪个分页器此刻应该被激活
          if (i == current - 1) {
            customPaginationHtml +=
              '&lt;img class="swiper_pagination_icon2" src="img/swiper-pagination' + (i + 1) + '.png" alt="" /&gt;';
          } else if (i == 0) {
            customPaginationHtml += '&lt;img class="swiper_pagination_icon" src="img/swiper-pagination1.png" alt="" />';
          } else if (i == 1) {
            customPaginationHtml += '<img class="swiper_pagination_icon" src="img/swiper-pagination2.png" alt="" />';
          } else if (i == 2) {
            customPaginationHtml += '<img class="swiper_pagination_icon" src="img/swiper-pagination3.png" alt="" />';
          } else if (i == 3) {
            customPaginationHtml += '<img class="swiper_pagination_icon" src="img/swiper-pagination4.png" alt="" />';
          }
        }
        return customPaginationHtml;
      },
    },
    direction: "horizontal",
    speed: 1000,
    loop: true,
    // autoplay: true,
    cache: false,
    observer: true,
    observeParents: true,
    paginationClickable: true,
    effect: "coverflow",
    slidesPerView: "auto",
    centeredSlides: true,
    coverflowEffect: {
      rotate: 0, //slide做3d旋转时Y轴的旋转角度。默认50。
      stretch: 100, //每个slide之间的拉伸值，越大slide靠得越紧。 默认0。
      depth: 160, //slide的位置深度。值越大z轴距离越远，看起来越小。 默认100。
      modifier: 4,
      slideShadows: false, //开启slide阴影。默认 true。
    },
  });
  // 自定义分页器点击切换
  $(".swiper-pagination").on("click", "img", function () {
    var index = $(this).index();
    //mySwiper.slideTo(index);
    mySwiper.slideToLoop(index);
  });

html 部分：

<!-- 轮播图 -->
    <div class="swiper-container">
      <div class="swiper-wrapper">
        <div class="swiper-slide"><img class="swiper_item_img" src="img/swiper_pic1.png" alt="" /></div>
        <div class="swiper-slide"><img class="swiper_item_img" src="img/swiper_pic1.png" alt="" /></div>
        <div class="swiper-slide"><img class="swiper_item_img" src="img/swiper_pic1.png" alt="" /></div>
        <div class="swiper-slide"><img class="swiper_item_img" src="img/swiper_pic1.png" alt="" /></div>
      </div>
      <!-- 如果需要分页器 -->
      <div class="swiper-pagination"></div>
    </div>

css部分：

.swiper-container {
  width: 100%;
  overflow: hidden; /* 因为给轮播图设置了loop:true,会循环复制出很多图片，所以设置了超出最外层盒子宽度后隐藏，可根据自己需求添加 */
}

.swiper-wrapper {
  width: 100%;
  height: 650px; /* 轮播区域的整体高度，包括分页器在内*/
}

.swiper-slide {
  width: 1000px !important; /* 轮播图的宽度，也就是图片的宽*/
  height: 600px !important; /* 轮播图的高度，也就是图片的高*/
  font-size: 14px;
  text-align: center;
  line-height: 80px;
  border-radius: 8px;
  position: relative;
}

/* 分页器区域 */
.swiper-pagination-custom {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 分页器的默认样式 */
.swiper_pagination_icon {
  width: 30px;
  height: 30px;
  margin-right: 25px;
  cursor: pointer;
}

/* 当点击分页器时放大图片 */
.swiper_pagination_icon2 {
  width: 60px;
  height: 60px;
  margin-right: 25px;
  cursor: pointer;
}

实现的效果为：
在这里插入图片描述

如果只是想改变分页器的样式，可以这样去改：

.swiper-container {
  position: relative;
}

.swiper-horizontal>.swiper-pagination-bullets,
.swiper-pagination-bullets.swiper-pagination-horizontal,
.swiper-pagination-custom,
.swiper-pagination-fraction {
  bottom: 50px;
}

.swiper-slide-active .bookName {
  display: block;
}

.swiper-pagination-bullet {
  width: 15px;
  background: #1a2b3c none repeat scroll 0 0;
  border-radius: 30%;
  display: inline-block;
  height: 15px;
  opacity: 1;
  transition: all 0.3s;
  cursor: pointer;
  bottom: 0;
}

.swiper-pagination-fraction,
.swiper-pagination-custom,
.swiper-container-horizontal>.swiper-pagination-bullets {
  bottom: 0;
}

.swiper-pagination-bullet-active {
  width: 30px;
  height: 15px;
  background: #FEB500;
  border-radius: 7.5px;
  border: medium none;
  opacity: 1;
}