<!-- 跑马灯 -->
<a-carousel arrows dotsClass="slick-dots slick-thumb">
<a slot="customPaging" slot-scope="props">
<img :src="getImgUrl(props.i)">
</a>
<div v-for="(img, index) in previewimgs" :key="index">
<img :src="img">
</div>
</a-carousel>
getImgUrl(i) {
return this.previewimgs[i];
},
