微信小程序 - 上拉加载

demo.wxml  文件

　　

<view wx:for="{{listdata}}" wx:key="listdata" class='listitem'>
  <view class='title'>{{ item.store_name }}</view>
  <image src='{{item.logo}}'></image>
</view>

<view class="load-more-wrap">
  <block wx:if="{{hasMore}}">
    <view class="load-content">
      <text class="weui-loading"/><text class="loading-text">玩命加载中</text>
    </view>
  </block>
  <block wx:else>
    <view class="load-content">
      <text>没有更多内容了</text>
    </view>
  </block>
</view>    

 

demo.js  文件

　　

Page({
  data: {
    listdata:[],   //数据
    paginated: '', 
    //{total:"12", count: 10, more: 1} total数据总数，count：当前分页数据数据，more：1表示还有，0表示无数据
    p:0, //当前分页；默认第一页
    hasMore:true  //提示
  },
  onLoad: function (options) {
    var that = this;
    var p = that.data.p;
    this.loadmore();
  },
  onReachBottom:function(){
    var that = this;
    var paginated = that.data.paginated;
    if (paginated.more != 0) {
      this.loadmore();
    }else{
      that.setData({
        "hasMore": false
      })
    }
  },
  loadmore:function(){
    wx.showToast({
      title: "玩命加载中",
      icon: 'loading',
      duration: 1000
    })
    var that = this;
    var p = ++that.data.p;
    wx.request({
      url: 'xxx',
      data: {
        "json": JSON.stringify({
          "demo": "xxx", "p": p
        })
      },
      method: 'POST',
      header: {
        'content-type': 'application/x-www-form-urlencoded'
      },
      success:function(res){
        if (res.data.data != 0) {
          that.setData({
            "listdata": that.data.listdata.concat(res.data.data), //加载数据
            "paginated": res.data.paginated, //{total:"12", count: 10, more: 1} 此处主要用于上拉加载是否加载数据
            "p":p
          })
        } else {
          that.setData({
            "hasMore":false
          })
        }
      }
    })
  }
})