微信小程序实现下拉刷新和轮播图效果

<scroll-view scroll-y="true" bindscrolltolower="lower" style="height:{{screenh}}px" class="scroll">
<swiper autoplay="{{autoplay}}" interval="{{interval}}" duration="{{duration}}" class="swiper-box">
  <block wx:for="{{imgurls}}">
   <swiper-item>
     <image src="{{item}}" class="slide-img" style="height:100%"></image>
   </swiper-item>
  </block>
</swiper>
<view class="text-food">美食篇</view>
<view class="list-box clear" wx:for="{{list}}">
  <image src="{{item.pic}}" class="img-food fl"></image>
  <view class="fl detail-view">
    <text class="text-name">{{item.name}}</text>
    <view class="use-text">用餐人数<text>{{item.cookingtime}}</text></view>
    <view class="use-text overflow">菜谱说明：<text>{{item.content}}</text></view>
  </view>
</view>
<view class="loading-view">
 <image src="../../img/loading.gif" class="loading-img" wx:if="{{hasmore}}"></image>
 <text wx:else class="no-data">没有更多内容了</text>
</view>
</scroll-view>

.fl {
  float: left;
}
.fr {
  float: right;
}
.clear:after {
  content: '';
  display: block;
  clear: both;
}
view,scroll-view,swiper{
 margin: 0px;
 padding: 0px;
 box-sizing: border-box;
}
.overflow{
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.scroll{
  wwidth: 100%;
}
.scroll .slide-img{
  width: 100%;
  display: block;
}
.scroll .text-food{
  color: #666;
  font-size: 30rpx;
  margin: 15rpx 0rpx 20rpx 1%;
  height: 30rpx;
  border-left: 2px solid rgb(0, 187, 161);
  padding-left: 10rpx;
  line-height: 30rpx;
}
.scroll .list-box{
  padding: 0px 0px 20rpx 1%;
  margin: 20rpx 0px;
  border-bottom: 1px solid #d1d1d1;
}
.list-box .img-food{
  width: 180rpx;
  height: 180rpx;
}
.list-box .detail-view{
  width: calc(100% - 180rpx);
  padding-left: 4%;
  height: 180rpx;
  padding-top: 20rpx;
}
.detail-view .text-name{
  color: rgb(0, 187, 161);
  font-size: 32rpx;
}
.detail-view .use-text{
  color: #666;
  font-size: 28rpx;
  margin: 15rpx 0px;
}
.loading-view{
  text-align: center;
  margin-bottom: 40rpx;
}
.loading-view .loading-img{
  width: 32px;
  height: 32px;
}
.loading-view .no-data{
  color: #666;
  font-size: 28rpx;
}

//fresh.js
var network_util = require('../../utils/network_util.js');
//获取应用实例
var app = getapp()
page({
 data: {
  screenh:0,
  autoplay:true,
  duration:500,
  interval:3000,
  hasmore:true,
  imgurls:[
   '../../img/test1.jpg',
   '../../img/test2.jpg',
   '../../img/test3.jpg',
  ],
  pagenum:10,
  list:[]
 },
 //事件处理函数
 bindviewtap: function() {
  wx.navigateto({
   url: '../logs/logs'
  })
 },
 onload: function () {
  console.log('onload');
  var that = this;
  wx.getsysteminfo({
   success: function(res) {
     that.setdata({
      screenh:res.windowheight * 1.5
     });
     console.log(that.data.screenh+"====-------------");
   }
  });
  var url = 'https://api.jisuapi.com/recipe/search?keyword=鸡肉&num=this.data.pagenum&appkey=(ps:你的appkey)';
  network_util._get(url,function(res){
     that.setdata({
      list:res.data.result.list
     });
     console.log("成功请求=============================");
  },function(){

  });
  //调用应用实例的方法获取全局数据
  app.getuserinfo(function(userinfo){
   //更新数据
   that.setdata({
    userinfo:userinfo
   })
  })
 },
 lower:function(){
  console.log("滑到底部了===================");
   var pagenum = this.data.pagenum + 5;
   var that = this;
   if(!that.data.hasmore || pagenum == 40){
     that.setdata({
      hasmore:false
    });
    return;

   }

   console.log(pagenum+"页数==========================");
   var url = 'https://api.jisuapi.com/recipe/search?keyword=白菜&num='+(pagenum)+'&appkey=(ps:你的appkey)';
   network_util._get(url,function(res){
     that.setdata({
      list:that.data.list.concat(res.data.result.list),
      pagenum:pagenum
     });
     console.log("成功请求2=============================");
   },function(){

   });
   console.log("---------------------------")
 }，

})

/**
 * url 请求地址
 * success 成功的回调
 * fail 失败的回调
 */
function _get( url, success, fail ) {

  console.log( "------start---_get----" );
  wx.request( {
    url: url,
    header: {
      'content-type': 'application/json'
    },
    success: function( res ) {
      success( res );
      console.log("成功引用了==================");
    },
    fail: function( res ) {
      fail( res );
    }
  });

  console.log( "----end-----_get----" );
}

/**
 * url 请求地址
 * success 成功的回调
 * fail 失败的回调
 */
function _post(url,data, success, fail ) {
   console.log( "----_post--start-------" );
  wx.request( {
    url: url,
    header: {
      'content-type': 'content-type x-www-form-urlencoded',
      'accept': 'application/json',
    },
    method:'post',
    data:'data='+data,
    success: function( res ) {
      success( res );
    },
    fail: function( res ) {
      fail( res );
    }
  });
   console.log( "----end-----_get----" );
}

  /**
 * url 请求地址
 * success 成功的回调
 * fail 失败的回调
 */
function _post_json(url,data, success, fail ) {
   console.log( "----_post--start-------" );
  wx.request( {
    url: url,
    // header: {
    //   'content-type': 'application/json',
    //   'accept': 'application/json',
    // },
    method:'post',
    data:data,
    success: function( res ) {
      success( res );
    },
    fail: function( res ) {
      fail( res );
    }
  });

  console.log( "----end----_post-----" );
}

module.exports = {
  _get: _get,
  _post:_post,
  _post_json:_post_json
}