Bootstrap Caroucel無法激活2個輪播指標

Question

我通過bootsstap caroucel創建了一個滑塊，我在滑塊中添加了兩個“ carousel-indicators”，一個用於頂部，一個用於底部，效果很好，但是當我單擊此處時，底部的旋轉木馬指示器無法激活是我的2個輪播指標的代碼：

 <ol id="carou-top" class="carousel-indicators carousel-indicators-top"> <li class="" data-slide-to="0" data-target="#myCarousel"></li> <li class="active" data-slide-to="1" data-target="#myCarousel"></li> </ol> <ol id="carou-bottom" class="carousel-indicators carousel-indicators-bottom"> <li class="" data-slide-to="0" data-target="#myCarousel"></li> <li class="" data-slide-to="1" data-target="#myCarousel"></li> </ol> 

我如何在底部添加“活動”類 非常感謝

Answer 1

您可以使用以下代碼實現此目的：

HTML：

<div class="container">

  <div class="row">

    <div class="col-md-6">

      <div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
        <!-- Indicators -->
        <ol class="carousel-indicators">
          <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
          <li data-target="#carousel-example-generic" data-slide-to="1"></li>
          <li data-target="#carousel-example-generic" data-slide-to="2"></li>
        </ol>

        <!-- Wrapper for slides -->
        <div class="carousel-inner" role="listbox">
          <div class="item active">
            <img src="http://www.gettyimages.fr/gi-resources/images/frontdoor/creative/PanoramicImagesRM/FD_image.jpg" alt="...">
          </div>
          <div class="item">
            <img src="http://www.gettyimages.fr/gi-resources/images/frontdoor/creative/PanoramicImagesRM/FD_image.jpg" alt="...">
          </div>
          <div class="item">
            <img src="http://www.gettyimages.fr/gi-resources/images/frontdoor/creative/PanoramicImagesRM/FD_image.jpg" alt="...">
          </div>
        </div>

        <!-- Controls -->
        <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
          <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
          <span class="sr-only">Previous</span>
        </a>
        <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
          <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
          <span class="sr-only">Next</span>
        </a>
      </div>

    </div>

  </div>

</div>

<ol class="carousel-indicators carousel-indicators-custom">
  <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
  <li data-target="#carousel-example-generic" data-slide-to="1"></li>
  <li data-target="#carousel-example-generic" data-slide-to="2"></li>
</ol>

JS：

$('#carousel-example-generic').on('slide.bs.carousel', function() {

  var resetTimeout;
  clearTimeout(resetTimeout);

  var i = 0;
  var activeSlideNumber = 0;
  var carouselIndicatorsDefault = $(this).find('.carousel-indicators > li');
  var carouselIndicatorsCustom = $('.carousel-indicators-custom > li');

  resetTimeout = setTimeout(function () {

    for (i = 0; i < carouselIndicatorsDefault.length; i++) {

      if (carouselIndicatorsDefault.eq(i).hasClass('active')) {
        activeSlideNumber = i;
      }

    }

    carouselIndicatorsCustom.removeClass('active');
    carouselIndicatorsCustom.eq(activeSlideNumber).addClass('active');

   }, 20);

});

JS中的For循環會檢查您的默認輪播指示器是否具有活動類（當幻燈片更改時），並將此幻燈片的編號存儲到activeSlideNumber變量中。 然后它將所有自定義指標中的活動類刪除，並僅添加到活動中的類。

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