小程序修改轮播图的小点样式

wxml： 

<view class='swiper-box'>
    <swiper indicator-dots="{{indicatorDots}}" autoplay="{{autoplay}}" interval="{{interval}}" duration="{{duration}}" bindchange="swiperChange">
      <block wx:for="{{imgUrls}}">
        <swiper-item>
          <image src="{{item}}" class="slide-image" />
        </swiper-item>
      </block>
    </swiper>
    <view class="dots"> 
      <block wx:for="{{imgUrls}}" wx:key="unique"> 
        <view class="dot{{index == swiperCurrent ? ' active' : ''}}"></view> 
      </block> 
    </view>
  </view>

css： 

swiper{
  width: 100%;
}
 
.swiper-box{
  position: relative;
  width: 100%;
}
.dots{ 
  position: absolute; 
  left: 0; 
  right: 0; 
  bottom: 20rpx; 
  display: flex; 
  justify-content: center; 
} 
.dots .dot{ 
  margin: 0 8rpx; 
  width: 14rpx; 
  height: 14rpx; 
  background: #fff; 
  border-radius: 8rpx; 
  transition: all .6s; 
} 
.dots .dot.active{ 
  width: 24rpx; 
  background: orchid; 
}
 
swiper image {
  width: 100%;
  height: 100%;
}

js

  swiperChange(e) {
    let current = e.detail.current;
    // console.log(current, '轮播图')
    let that = this;
    that.setData({
      swiperCurrent: current,
    })
  },