Swiper：slideTo（“。slide-classname”）

Question

Swiper（http://www.idangero.us/swiper）是否提供了一个事件来滑动到具有特定类的幻灯片？有一个事件slideTo（索引），但我需要像slideTo（“。slide-classname”）这样的东西。

这就是我想要做的事情 - 也许可以采用不同的方法：

<script type="text/javascript">
    $j(document).ready(function(){
      $j("#attribute529").change(function() { 
        var optionValue = $j(this).val();
        var optionValueText = $j.trim($j('#attribute529 :selected').text());
        if( ! optionValue ){ 
          galleryTop.slideTo(0);
        } else {
          galleryTop.slideTo(".product-image_" + optionValueText);
        }
      });
    });
</script>

Answer 1

我在下面创建了一个解决方案，在这里我创建了一个函数getSlideIndexByClass，它将通过它的类名返回滑块中元素的索引，然后我就是使用该索引值调用slideTo函数。

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var swiper = new Swiper('.swiper-container', {
  pagination: '.swiper-pagination',
  paginationClickable: true
});

swiper.slideTo(getSlideIndexByClass('my-class'));

function getSlideIndexByClass(className) {
  var index = 0;
  $.each($('.swiper-wrapper').children(), function(i, item) {
    if ($(item).hasClass(className)) {
      index = i;
      return false;
    }
  });
  return index;
}

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html,
body {
  position: relative;
  height: 100%;
}
body {
  background: #eee;
  font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: #000;
  margin: 0;
  padding: 0;
}
.swiper-container {
  width: 100%;
  height: 100%;
}
.swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #fff;
  /* Center slide text vertically */
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
}

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<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/Swiper/3.4.1/css/swiper.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/Swiper/3.4.1/js/swiper.jquery.min.js"></script>
<div class="swiper-container">
  <div class="swiper-wrapper">
    <div class="swiper-slide">Slide 1</div>
    <div class="swiper-slide">Slide 2</div>
    <div class="swiper-slide">Slide 3</div>
    <div class="swiper-slide">Slide 4</div>
    <div class="swiper-slide">Slide 5</div>
    <div class="swiper-slide my-class">Slide 6</div>
    <div class="swiper-slide">Slide 7</div>
    <div class="swiper-slide">Slide 8</div>
    <div class="swiper-slide">Slide 9</div>
    <div class="swiper-slide">Slide 10</div>
  </div>
  <!-- Add Pagination -->
  <div class="swiper-pagination"></div>
</div>

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