使用幻灯片更改背景颜色 jQuery Cycle2

Question

我正在对网站上的某些滑块使用 Cycle2 插件 （http://jquery.malsup.com/cycle2/），并且需要从当前幻灯片中包含的每个图像中检测内联样式，然后将其传递给父div 以便更改每张幻灯片滑块周围区域的背景颜色。

滑块的输出如下所示：

<div class="cycle-slideshow" data-cycle-fx="fade" data-cycle-timeout="0" data-cycle-slides="div" data-cycle-prev="#previous" data-cycle-next="#next" data-cycle-swipe="true" data-cycle-pager="#no-template-pager" data-cycle-pager-template="" style="position: relative;">
<div class="cycle-sentinel cycle-slide" style="position: static; top: 0px; left: 0px; z-index: 100; opacity: 1; visibility: hidden; display: block;">
    <a href="#"><img style="background-color: #ff0000;" src="http://cambelt.co/1070x400/Rotator1?color=cccccc,ffffff" alt="fsadfsdfas"></a>
</div>
<div class="slide cycle-slide cycle-slide-active" style="position: absolute; top: 0px; left: 0px; z-index: 100; opacity: 1;">
    <a href="#"><img style="background-color: #ff0000;" src="http://cambelt.co/1070x400/Rotator1?color=cccccc,ffffff" alt="fsadfsdfas"></a>
</div>
<div class="slide cycle-slide" style="position: absolute; top: 0px; left: 0px; z-index: 99; display: none;">
    <a href="#"><img src="http://cambelt.co/1070x400/Rotator2?color=cccccc,ffffff" alt=""></a>
</div>
<div class="slide cycle-slide" style="position: absolute; top: 0px; left: 0px; z-index: 97; display: none;">
    <a href="#"><img src="http://cambelt.co/1070x400/Rotator3?color=cccccc,ffffff" alt=""></a></div>
<div class="slide cycle-slide" style="position: absolute; top: 0px; left: 0px; z-index: 96; display: none;"><a href="#"><img src="http://cambelt.co/1070x400/Rotator4?color=cccccc,ffffff" alt=""></a>
</div>
</div>

我的父div 位于滑块上方（.home-rotator-wrap）并跨越窗口的宽度。到目前为止，我有这个，但我相当确定我离得很远。

$('.home-rotator-wrap > .cycle-slide-active > img').cycle(function() {
    var slideBG = $(this).attr('style');
    $('.home-rotator-wrap').attr('style', slideBG);
});

Answer 1

首先，您需要将"数据周期超时"设置为0以外的其他值，图像根本没有显示。代码如下：

$('.cycle-slideshow').on('cycle-before', function (event, optionHash, outgoingSlideEl, incomingSlideEl, forwardFlag) {
    var bg = $(incomingSlideEl).find('img').css('backgroundColor'); // get background style from each image
    $('body').css('background', bg); // set background color from var
});

Demo， JSFiddle