OWL-带有数据属性的轮播在加载时不工作

Question

我需要帮助数据属性的猫头鹰-旋转木马。

正如您在我示例中所看到的，在幻灯片1和3中，每个项目都有属性。仅工作事件是触发器，但不在加载幻灯片1（第一张幻灯片）时工作。

提前谢谢你。

代码本中的示例https://Codepen.io/jafaris-mustafa/pen/xwjwjaz

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$('.owl-carousel').owlCarousel({
  autoplay: true,
  loop: true,
  margin: 10,
  autoHeight: true,
  autoplayTimeout: 10000,
  smartSpeed: 800,
  nav: true,
  items: 1,

});

var owl = $('.owl-carousel');
owl.on('changed.owl.carousel', function(property) {
  var current = property.item.index;
  var src = $(property.target).find(".owl-item").eq(current).find(".item").attr('setBgClr');
  //console.log('Image current is ' + src);

  if ($(property.target).find(".owl-item").eq(current).find(".item").is('[setBgClr]')) {
    $(".heroes-wrap").css("background-color", src);
  } else {
    $(".heroes-wrap").css("background-color", "white");
  }

});

body {
  font-family: Arial, Helvetica, sans-serif;
}

.heroes-wrap {
  margin: 2em;
  padding: 1em;
}

<link href="https://owlcarousel2.github.io/OwlCarousel2/assets/owlcarousel/assets/owl.theme.default.min.css" rel="stylesheet" />
<link href="https://owlcarousel2.github.io/OwlCarousel2/assets/owlcarousel/assets/owl.carousel.min.css" rel="stylesheet" />

<div class="heroes-wrap">
  <div class="owl-carousel owlCarousel-item">
    <div class="item" setBgClr="red">
      <div class="heroes-txt">
        <h2>Slide 1</h2>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
        </p>
      </div>
    </div>
    <div class="item">
      <div class="heroes-txt">
        <h2>Slide 2</h2>
        <p>Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
      </div>
    </div>
    <div class="item" setBgClr="#4CAF50">
      <div class="heroes-txt">
        <h2>Slide 3</h2>
        <p>Orci nulla pellentesque dignissim enim. Nunc non blandit massa enim. At quis risus sed vulputate odio ut. Vulputate odio ut enim blandit volutpat maecenas. Massa id neque aliquam vestibulum morbi blandit.</p>
      </div>
    </div>
  </div>
</div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<script src="https://owlcarousel2.github.io/OwlCarousel2/assets/owlcarousel/owl.carousel.js"></script>

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Answer 1

有一个事件initialized.owl.carousel，它将在轮播初始化时触发。请注意，在Owl旋转木马初始化之前，必须附加initialize.Owl.Carousel和initialize.Owl.Carousel事件。

利用这些事件在初始加载时改变颜色，检查更新的小提琴。

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js prettyprint-override">var owl = $('.owl-carousel');

owl.on('initialized.owl.carousel', function(property){  
  var current = property.item.index;
    var src = $(property.target).find(".owl-item").eq(current).find(".item").attr('setBgClr');
    if($(property.target).find(".owl-item").eq(current).find(".item").is('[setBgClr]')) {
        $(".heroes-wrap").css("background-color", src);
    } else {
        $(".heroes-wrap").css("background-color", "white");
    }
});

$('.owl-carousel').owlCarousel({
    autoplay: true,
  loop: true,
  margin: 10,
  autoHeight: true,
  autoplayTimeout: 10000,
  smartSpeed: 800,
  nav: true,
  items: 1,

});

owl.on('changed.owl.carousel',function(property){
    var current = property.item.index;
    var src = $(property.target).find(".owl-item").eq(current).find(".item").attr('setBgClr');

    if($(property.target).find(".owl-item").eq(current).find(".item").is('[setBgClr]')) {
        $(".heroes-wrap").css("background-color", src);
    } else {
        $(".heroes-wrap").css("background-color", "white");
    }
    
});

body {font-family:Arial, Helvetica, sans-serif;}
.heroes-wrap {margin:2em; padding:1em;}

<link href="https://owlcarousel2.github.io/OwlCarousel2/assets/owlcarousel/assets/owl.theme.default.min.css" rel="stylesheet"/>
<link href="https://owlcarousel2.github.io/OwlCarousel2/assets/owlcarousel/assets/owl.carousel.min.css" rel="stylesheet"/>

<div class="heroes-wrap">
  <div class="owl-carousel owlCarousel-item">
    <div class="item" setBgClr="red">
      <div class="heroes-txt">
        <h2>Slide 1</h2>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
        </p>
      </div>
    </div>
    <div class="item">
      <div class="heroes-txt">
        <h2>Slide 2</h2>
        <p>Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
      </div>
    </div>
    <div class="item" setBgClr="#4CAF50">
      <div class="heroes-txt">
        <h2>Slide 3</h2>
        <p>Orci nulla pellentesque dignissim enim. Nunc non blandit massa enim. At quis risus sed vulputate odio ut. Vulputate odio ut enim blandit volutpat maecenas. Massa id neque aliquam vestibulum morbi blandit.</p>
      </div>
    </div>
  </div>
</div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<script src="https://owlcarousel2.github.io/OwlCarousel2/assets/owlcarousel/owl.carousel.js"></script>