微信小程序 数据交互与渲染实例详解

//list.js 
//获取应用实例 
var app = getApp() 
Page({ 
 data: { 
  list:[], 
  hiddenLoading: true, 
  url: '' 
 }, 
 loadList: function () { 
  var that = this; 
  that.setData({ 
   hiddenLoading: !that.data.hiddenLoading 
  }) 
  var url = app.urls.CloudData.getList; 
  that.setData({ 
   url: url 
  }); 
  wx.request({ 
   url: url, 
   data: {}, 
   method: 'GET', 
   success: function (res) { 
    var list= res.data.list; 
    if (list == null) { 
     list = []; 
    } 
    that.setData({ 
     list: list, 
     hiddenLoading: !that.data.hiddenLoading 
    }); 
     wx.showToast({ 
     title: "获取数据成功", 
     icon: 'success', 
     duration: 2000 
    }) 
   }, 
   fail: function (e) { 
    var toastText='获取数据失败' + JSON.stringify(e); 
    that.setData({ 
     hiddenLoading: !that.data.hiddenLoading 
    }); 
    wx.showToast({ 
     title: toastText, 
     icon: '', 
     duration: 2000 
    }) 
   }, 
   complete: function () { 
    // complete 
   } 
  }), 
 //事件处理函数 
 bindViewTap: function () { 
  wx.navigateTo({ 
   url: '../logs/logs' 
  }) 
 }, 
 onLoad: function () { 
 
 }, 
 onReady: function () { 
  this.loadList(); 
 }, 
 onPullDownRefresh: function () { 
  this.loadList(); 
  wx.stopPullDownRefresh() 
 } 
}) 

{ 
  "navigationBarTitleText": "产品列表",   
  "enablePullDownRefresh":true 
} 

{ 
 "pages":[ 
  "pages/index/index", 
  "pages/logs/logs", 
  "pages/list/list" 
 ], 
 "window":{ 
  "backgroundTextStyle":"light", 
  "navigationBarBackgroundColor": "#fff", 
  "navigationBarTitleText": "WeChat", 
  "navigationBarTextStyle":"black", 
  "enablePullDownRefresh":true 
 } 
} 

<!--list.wxml--> 
<view class="container container-ext"> 
 <!--默认隐藏--> 
 <loading hidden="{{hiddenLoading}}">正在加载</loading> 
 <scroll-view scroll-y="true"> 
  <view> 
   <block wx:for="{{list}}" wx:key="no"> 
    <view class="widget"> 
     <view> 
      <text >{{item.no}}({{item.content}})</text> 
     </view> 
    </view> 
   </block> 
  </view> 
 </scroll-view> 
</view> 

/**list.wxss**/ 
 
.widget { 
 position: relative; 
 margin-top: 5rpx; 
 margin-bottom: 5rpx; 
 padding-top: 10rpx; 
 padding-bottom: 10rpx; 
 padding-left: 40rpx; 
 padding-right: 40rpx; 
 border: #ddd 1px solid; 
} 

/**app.wxss**/ 
.container { 
 height: 100%; 
 display: flex; 
 flex-direction: column; 
 align-items: center; 
 justify-content: space-between; 
 box-sizing: border-box; 
 padding-top: 10rpx; 
 padding-bottom: 10rpx; 
}