html
<view class="swiper-container">
<swiper autoplay="auto" interval="5000" duration="500" current="{{swiperCurrent}}" bindchange="swiperChange" class="swiper">
<block wx:for="{{imgUrl}}" wx:key="unique">
<swiper-item>
<image src="{{item}}" class="img"></image>
</swiper-item>
</block>
</swiper>
<view class="dots">
<block wx:for="{{imgUrl}}" wx:key="unique">
<view class="dot{{index == swiperCurrent ? ' active' : ''}}"></view>
</block>
</view>
</view>
wxss
.swiper-container{
position: relative;
}
.swiper-container .swiper{
height: 300rpx;
}
.swiper-container .swiper .img{
width: 100%;
height: 100%;
}
.swiper-container .dots{
position: absolute;
left: 0;
right: 0;
bottom: 20rpx;
display: flex;
justify-content: center;
}
.swiper-container .dots .dot{
margin: 0 8rpx;
width: 14rpx;
height: 14rpx;
background: #fff;
border-radius: 8rpx;
transition: all .6s;
}
.swiper-container .dots .dotactive{
width: 24rpx;
background: #f80;
}
js
data: {
imgUrl: [
// 里面写图片地址
'http://img02.tooopen.com/images/20150928/tooopen_sy_143912755726.jpg',
'http://img06.tooopen.com/images/20160818/tooopen_sy_175866434296.jpg',
'http://img06.tooopen.com/images/20160818/tooopen_sy_175833047715.jpg'
],
swiperCurrent: 0,
},
swiperChange:function(e){
this.setData({
swiperCurrent: e.detail.current // current 改变时会触发 change 事件
})
}
修改成功.png
wx:key
如果列表中项目的位置会动态改变或者有新的项目添加到列表中，并且希望列表中的项目保持自己的特征和状态（如 <input/> 中的输入内容，<switch/> 的选中状态），需要使用 wx:key 来指定列表中项目的唯一的标识符。
