如：

<div id="carouselExampleCaptions001"  class="carousel slide" data-ride="carousel">
　　<div class="carousel-inner" style="height: 100%;">
													
	<div class="carousel-item active" >
		<img src="img/page4-swiper07.png" >									
	</div>
	<div class="carousel-item" >
	　　　　　<img src="img/page4-swiper09.png" >									
	</div>
	<div class="carousel-item" >
		<img src="img/page4-swiper04.png" >									
	</div>
	<div class="carousel-item" >
		<img src="img/page4-swiper06.png" >									
	</div>											
　　</div>
</div>

$('#carouselExampleCaptions').on('slide.bs.carousel', function (event) {
            　　var $hoder = $('#carouselExampleCaptions').find('.carousel-item'),
            　　$items = $(event.relatedTarget);
            　　//getIndex就是輪播到當前位置的索引
            　　var getIndex= $hoder.index($items);
               
 
console.log(getIndex)
 })