javascript - 使用 Owl Carousel Url Hash Navigation 更改按钮样式

Question

这是我的 Owl Carousel HTML 和 javascript。

HTML:

<div id="owl-demo" class="owl-carousel owl-theme">
   <div class="item" data-hash="slide1">
      <img src="images/mainslider.png">
      <h1>Heading</h1>
      <p>Paragraph Text</p>
   </div>
   <div class="item" data-hash="slide2">
      <img src="images/mainslider.png">
      <h1>Heading</h1>
      <p>Paragraph Text</p>
   </div>
   <div class="item" data-hash="slide3">
      <img src="images/mainslider.png">
      <h1>Heading</h1>
      <p>Paragraph Text</p>
   </div>
</div>

JavaScript:

    $("#owl-demo").owlCarousel({

      navigation : true, // Show next and prev buttons
      slideSpeed : 300,
      paginationSpeed : 400,
      items : 1, 
      itemsDesktop : false,
      itemsDesktopSmall : false,
      itemsTablet: false,
      itemsMobile : false,
      URLhashListener:true,
      autoplayHoverPause:true,
      startPosition: 'URLHash'
  });

我下面有一个使用 Url Hash Navigation 的导航 block 。

<nav class="navbar navbar-default secondary-navbar">
<div class="container-fluid">
<div class="container">
<ul class="nav navbar-nav">
<li><a href="#slide1">Slide 1</a></li>
<li><a href="#slide2">Slide 2</a></li>
<li><a href="#slide3">Slide 3</a></li>
</ul>
</div>
</div>

当一张幻灯片被点击或出现在屏幕上时，我需要相应的链接来更改它的样式以显示它是当前事件的。

我还没有在 Owl Carousel 中找到任何 native 方法来执行此操作，也不确定如何使用 Javascript 来完成此操作

Answer 1

折腾了半天，想出了办法。

1. 在散列导航中添加#link 作为类，在本例中添加一个额外的类“slidetabs”，例如<a class="night_tubing slidetabs" href="#night_tubing">NIGHT TUBING</a>
2. 获取当前幻灯片元素及其数据哈希
3. 将该数据散列作为一个类提供给更改后的函数以将类添加到导航按钮
4. 然后对更改事件重复相同的操作以删除事件类
5. 将 css 添加到 .slidetabs.active

$('.owl-carousel').on('changed.owl.carousel', function(event) { var current = event.item.index; var hash = $(event.target).find(".owl-item").eq(current).find(".item").attr('data-hash'); $('.'+hash).addClass('active'); });

$('.owl-carousel').on('change.owl.carousel', function(event) { var current = event.item.index; var hash = $(event.target).find(".owl-item").eq(current).find(".item").attr('data-hash'); $('.'+hash).removeClass('active'); });

注意:这是按预期工作的，所以我没有进一步研究它，可能有更好的解决方案和良好的编码。

完整代码如下:

slider HTML:

<div class="owl-carousel owl-theme owl-loaded owl-drag">
   <div class="owl-stage-outer">
      <div class="owl-stage">
         <div class="owl-item">
            <div class="item" data-hash="cowboy_coaster">
               <!-- Slide Content -->
            </div>
         </div>
         <div class="owl-item">
            <div class="item" data-hash="night_tubing">
               <!-- Slide Content -->
            </div>
         </div>
         <!-- . -->
         <!-- . -->
         <!-- . -->
         <!-- . -->
      </div>
   </div>
</div>
</div>
<div class="owl-nav">
   <button type="button" role="presentation" class="owl-prev">
      <img class="slider-arrow" src="/wp-content/uploads/2019/01/slider-arrow-pre.png">
      <div class="slider-counter">1 / 4</div>
   </button>
   <button type="button" role="presentation" class="owl-next"><img class="slider-arrow" src="/wp-content/uploads/2019/01/slider-arrow-next.png"></button>
</div>
<div class="owl-dots disabled"></div>
<div class="owl-slider-tabs">
   <ul>
      <li>
         <a class="dining slidetabs active" href="#dining">DINING</a>
      </li>
      <li>
         <a class="night_tubing slidetabs" href="#night_tubing">NIGHT TUBING</a>
      </li>
      <li>
         <a class="cowboy_coaster slidetabs" href="#cowboy_coaster">COWBOY COASTER</a>
      </li>
      <li>
         <a class="lift_tickets slidetabs" href="#lift_tickets">LIFT TICKETS</a>
      </li>
   </ul>
</div>

Javascript:

jQuery(document).ready(function($) {
  $('.owl-carousel').on('initialized.owl.carousel changed.owl.carousel', function(e) {
    if (!e.namespace)  {
      return;
    }
    var carousel = e.relatedTarget;
    $('.slider-counter').text(carousel.relative(carousel.current()) + 1 + ' / ' + carousel.items().length);
    }).owlCarousel({
      nav:true,
      navText: ["<img class='slider-arrow' src='/wp-content/uploads/2019/01/slider-arrow-pre.png'><div class='slider-counter'>1 / 3</div>","<img class='slider-arrow' src='/wp-content/uploads/2019/01/slider-arrow-next.png'>"],
      loop:true,
      slideSpeed : 300,
      paginationSpeed : 400,
      items:1,
      dots:false,
      URLhashListener:true,
      startPosition: 'URLHash',
      autoplay:true,
      autoplayTimeout:9000,
      autoplayHoverPause:true,
      animateOut: 'fadeOut',
      animateIn: 'fadeIn',
    responsiveClass:true,
    responsive:{
        0:{
            items:1,
            nav:true
        },
        600:{
            items:1,
            nav:true
        },
        1000:{
            items:1,
            nav:true
        }
    }
  });

    $('.owl-carousel').on('changed.owl.carousel', function(event) {
      var current = event.item.index;
      var hash = $(event.target).find(".owl-item").eq(current).find(".item").attr('data-hash');
      $('.'+hash).addClass('active');
    });

    $('.owl-carousel').on('change.owl.carousel', function(event) {
      var current = event.item.index;
      var hash = $(event.target).find(".owl-item").eq(current).find(".item").attr('data-hash');
      $('.'+hash).removeClass('active');
    });

});

CSS:

.slidetabs.active {
    color: #ce2d27;
    text-decoration: underline;
}