swiper根据图片切换不同的背景色

swiper根据图片切换不同的背景色

JS:

var mySwiper = new Swiper('.swiper-container', {
    autoplay: true, //可选选项，自动滑动
    loop: true,
    paginationClickable: true,
    navigation: {
        nextEl: ' .swiper-button-next ',
        prevEl: ' .swiper-button-prev ',
    },
    autoplay: {
        delay: 3000,
    },
    pagination: {
        el: ' .swiper-pagination ',
 
    },
    on: {
        slideChangeTransitionStart() {
            $(".m-slide-container").css("background", $('#banner-image' + this.realIndex).attr("data-bg_color"))
        }
    }
 
});

HTML:

<div class="m-slide-container">
<div class="swiper-container" style="text-align: center;">
<div class="swiper-wrapper">
<div class="swiper-slide">
<a href="{$banner['url']}" target="_blank">
<img class="banner-img" id="banner-image{$+1}" data-bg_color="{{$banner["bg_color"]}}" class="banner-img" src="{$banner['thumb_url'])}" alt="{{$banner['title']}}">
</a>
</div>

</div>
<div class="swiper-button-prev swiper_btn swiper-button-white" style="margin-left: 10px;opacity:0.3;">
</div>
<div class="swiper-button-next swiper_btn swiper-button-white" style="margin-right: 10px;opacity:0.3;">
</div>
</div>
</div>