微信小程序实战之轮播图（3）

<view class="recommend" > 
 <view class="swiper-container"> 
  <swiper autoplay="auto" interval="5000" duration="500" current="{{swiperCurrent}}" bindchange="swiperChange" class="swiper"> 
   <block wx:for="{{slider}}" wx:key="unique"> 
    <swiper-item data-id="{{item.id}}" data-url="{{item.linkUrl}}"> 
     <image src="{{item.picUrl}}" class="img"></image> 
    </swiper-item> 
   </block> 
  </swiper> 
  <view class="dots"> 
   <block wx:for="{{slider}}" wx:key="unique"> 
    <view class="dot{{index == swiperCurrent ? ' active' : ''}}" bindtap="chuangEvent" id="{{index}}">{{index+1}}</view> 
   </block> 
  </view> 
 </view> 
</view> 

.swiper-container{ 
 position: relative; 
} 
.swiper-container .swiper{ 
 height: 300rpx; 
} 
.swiper-container .swiper .img{ 
 width: 100%; 
 height: 100%; 
} 
.swiper-container .dots{ 
 position: absolute; 
 right: 40rpx; 
 bottom: 20rpx; 
 display: flex; 
 justify-content: center; 
} 
.swiper-container .dots .dot{ 
 margin: 0 10rpx; 
 width: 28rpx; 
 height: 28rpx; 
 background: #fff; 
 border-radius: 50%; 
 transition: all .6s; 
 font: 300 18rpx/28rpx "microsoft yahei"; 
 text-align: center; 
} 
.swiper-container .dots .dot.active{ 
 background: #f80; 
 color:#fff; 
}

//导入js 
var util = require('../../utils/util.js') 
Page({ 
 data: { 
  slider: [], 
  swiperCurrent: 0 
 }, 
 onLoad: function () { 
  var that = this; 
//网络访问，获取轮播图的图片 
  util.getRecommend(function(data){ 
   that.setData({ 
    slider: data.data.slider 
   }) 
  });  
 }, 
 //轮播图的切换事件 
 swiperChange: function(e){ 
//只要把切换后当前的index传给<swiper>组件的current属性即可 
  this.setData({ 
   swiperCurrent: e.detail.current 
  }) 
 }, 
 //点击指示点切换 
 chuangEvent: function(e){ 
  this.setData({ 
   swiperCurrent: e.currentTarget.id 
  }) 
 } 
}) 

//网络访问 
function getRecommend(callback) { 
 wx.request({ 
  url: 'https://c.y.qq.com/musichall/fcgi-bin/fcg_yqqhomepagerecommend.fcg', 
  data: { 
   g_tk: 5381, 
   uin: 0, 
   format: 'json', 
   inCharset: 'utf-8', 
   outCharset: 'utf-8', 
   notice: 0, 
   platform: 'h5', 
   needNewCode: 1, 
   _: Date.now() 
  }, 
  method: 'GET', 
  header: {'content-Type': 'application/json'}, 
  success: function(res){ 
   if(res.statusCode == 200){ 
    callback(res.data); 
   } 
  } 
 }) 
} 
 
module.exports = { 
 getRecommend: getRecommend 
}