WeChat 미니 프로그램 기능 구현: 위로 밀어서 로드하고 아래로 당겨 새로 고침

<view  class="page">
    <view class="page__bd">
        <!--用name 定义模版-->
        <template name="msgTemp">
            <!--
            1. scaleToFill : 图片全部填充显示，可能导致变形 默认
            2. aspectFit ： 图片全部显示，以最长边为准
            3. aspectFill ： 图片全部显示，以最短边为准
            4. widthFix ： 宽不变，全部显示图片
            -->
            <view  class="weui-panel__bd">
                <navigator url="../detail/detail?id={{id}}" class="weui-media-box weui-media-box_appmsg" hover-class="weui-cell_active">
                    <view class="weui-media-box__hd weui-media-box__hd_in-appmsg">
                        <image class="weui-media-box__thumb" src="{{src}}" style="width: 60px; height: 60px;"/>
                    </view>
                    <view class="weui-media-box__bd weui-media-box__bd_in-appmsg">
                        <view class="weui-media-box__title">{{title}}</view>
                        <view class="weui-media-box__desc">{{time}}</view>
                    </view>
                </navigator>
            </view>
        </template>
        
        <scroll-view scroll-top="{{scrollTop}}" style="height: {{windowHeight}}px; width: {{windowWidth}}px;" scroll-y="true" bindscrolltoupper="pullDownRefresh"  bindscroll="scroll" bindscrolltolower="pullUpLoad" class="weui-panel weui-panel_access">
            <view class="weui-panel__hd">文章列表</view>
                <view wx:for-items="{{msgList}}" wx:key="{{item.id}}">
                    <view class="kind-list__item">
                        <!--用is 使用模版-->
                        <template is="msgTemp" data="{{...item}}"/>
                    </view>
                </view>
        </scroll-view>
        <view>
            <loading hidden="{{hidden}}" bindchange="loadingChange">
            加载中...
            </loading>
        </view>
    </view>
    <view class="page__ft">
    </view>
</view>

// pages/list/list.js
var app = getApp();

// 当前页数
var pageNum = 1;


// 加载数据
var loadMsgData = function(that){
  that.setData({
    hidden:false
  });
  var allMsg = that.data.msgList;
  app.ajax.req('/itdragon/findAll',{
    "page":pageNum , "pageSize" : 6
  },function(res){  
    // 不能直接 allMsg.push(res); 相当于list.push(list);打乱了结构
    for(var i = 0; i < res.length; i++){
      allMsg.push(res[i]);
    }
    that.setData({
      msgList:allMsg
    });
    pageNum ++;
    that.setData({
      hidden:true
    });
  });
}

Page({
  data:{
    msgList:[],
    hidden:true,
    scrollTop : 0,
    scrollHeight:0
  },
  onLoad:function(options){
    // 页面初始化 options为页面跳转所带来的参数
    var that = this;
    wx.getSystemInfo({
      success: function(res) {
        that.setData( {
          windowHeight: res.windowHeight,
          windowWidth: res.windowWidth
        })
      }
    });
    loadMsgData(that);
  },
  onReady:function(){
    // 页面渲染完成
  },
  onShow:function(){
    // 页面显示
  },
  // 下拉刷新数据
  pullDownRefresh: function() {
    var that = this;
    pageNum = 1;
    that.setData({
      msgList : [],
      scrollTop : 0
    });
    loadMsgData(that);
  },

  // 上拉加载数据 上拉动态效果不明显有待改善
  pullUpLoad: function() {
    var that = this;
    loadMsgData(that);
  },
  // 定位数据
  scroll:function(event){
    var that = this;
    that.setData({
      scrollTop : event.detail.scrollTop
    });
 },
  onHide:function(){
    // 页面隐藏
  },
  onUnload:function(){
    // 页面关闭
  }
})