微信小程序自带的轮播图小点，是一个圆点且在图片上展示，不美观。上图为自定义后的轮播图效果
代码如下：
wxhtml：
<!-- 轮播图 -->
<view class="lbt">
<swiper class="banner-list" style="height:100%;" circular="{{circular}}" indicator-dots='' autoplay="{{autoplay}}" interval="{{interval}}" duration="{{duration}}" bindchange="swiperChange">
<block wx:for="{{imgUrls}}" wx:key='{{item.id}}'>
<swiper-item>
<image src="{{urls}}{{item.image}}" class="slide-image" width="100%" />
</swiper-item>
</block>
</swiper>
<!-- 这里是自定义控制组件的模块 -->
<view class="dots">
<block wx:for="{{imgUrls}}" wx:key="{{item.id}}">
<!-- 循环图片张数有多少张图片就有多少个小点 -->
<view class="dot{{index == swiperCurrent ? ' active' : ''}}"></view>
</block>
</view>
</view>
</view>wxjs：
// 轮播图片改变时，小圆点也改
swiperChange: function (e) {
this.setData({
swiperCurrent: e.detail.current
})
},wxcss：
.lbt {
position: relative;
width: 100%;
height: 300rpx;
padding: 30rpx;
box-sizing: border-box;
border-radius: 10rpx;
}
.lbt .dots{
position: absolute;
left: 0;
right: 0;
bottom: 0;
display: flex;
justify-content: center;
}
.lbt .dots .dot{
margin: 0 6rpx;
width: 18rpx;
height: 10rpx;
background: #A2A2A2;
border-radius: 6rpx;
transition: all .6s;
}
.lbt .dots .dot.active{
width: 30rpx;
height: 10rpx;
background:#3d3d3d;
}
.slide-image {
width: 100%;
height: 100%;
border-radius: 10rpx;
}
