thinkphp tag implementation bootsrtap carousel carousel instance code

Since the first div of carousel carousel needs to be set with active style to display normally, the dots on it also need numbers.

Using volist tags can get subscripts while looping (foreach, for tags can't)

<div class="Container">
<!-- carousel -->
<div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
<ol class="carousel-indicators">
<volist name="bopic" id="xt">
<li data-target="#carousel-example-generic" data-slide-to="{$i-1}" class="<if condition="$i eq 1 ">active</if>"></li>
</volist>
</ol>
<div class="carousel-inner">
<volist name="bopic" id="xt">
<div class='item <if condition="$i eq 1 ">active</if>'>
<img src="{$xt.page_bopic_image}" alt="{$xt.page_bopic_seo}"/>
</div>
</volist>
</div>
<a class="left carousel-control" href="#carousel-example-generic" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left"></span>
</a>
<a class="right carousel-control" href="#carousel-example-generic" data-slide="next">
<span class="glyphicon glyphicon-chevron-right"></span>
</a>
</div>
<!-- /.carousel -->
</div>