微信小程序 - （下拉）加載更多數據

 

 

 

注意和后端配合就行了，前端也只能把數據拼接起來！

 

無論是下拉加載還是加載更多，一樣的道理！

 

注意首次加載傳遞參數

 

注意每次加載數據數

 

wxml

    <view class='table-rank'>
      <view class='tables center' wx:for="{{ranklist}}" wx:for-index="idx" wx:key="prototype">
        <view class='stage-rank'>
          {{idx+1}}
        </view>
        <view class='name'>{{item.name}}</view>
        <view class='price'>{{item.count}}</view>
      </view>
    </view>

    <view class='more'>
      <button loading="{{loading}}" disabled="{{disabled}}" catchtap="setLoading">{{loadText}}</button>
    </view>

 

js

var app = getApp().globalData;

Page({
  data: {
    loadText: '加載更多',
    ranklist: [],
    count: 1
  },


  onLoad: function(res) {
    // 首次加載：傳參數num:0
    let num = 0;
    let _page = this;
    let uid = wx.getStorageSync('uinfo').uid;


    wx.request({
      url: 'url',
      data: {
        uid,
        num
      },
      header: {
        'content-type': 'application/json'
      },
      method: 'GET',
      dataType: 'json',
      responseType: 'text',
      success(res) {
        _page.setData({
          ranklist: res.data.all_list,
          me: res.data.me
        });
      }
    })
  },

  //點擊 加載更多 按鈕
  setLoading(e) {

    let _this = this;
    let _page = this;

    // 暫存數據
    let ranklistBefore = _this.data.ranklist;

    let uid = wx.getStorageSync('uinfo').uid;

    // 每次加載數據條數(10)
    let num = _this.data.count++ * 10;

    wx.request({
      url: app.api.simulation_ranking,
      data: {
        uid,
        num
      },
      header: {
        'content-type': 'application/json'
      },
      method: 'GET',
      dataType: 'json',
      responseType: 'text',
      success(res) {
        // 每次加載數據,請求一次就發送10條數據過來
        let eachData = res.data.all_list;

        if (eachData.length == 0) {
          wx.showToast({
            title: '沒有更多數據了!~',
            icon: 'none'
          })
        } else {
          wx.showToast({
            title: '數據加載中...',
            icon: 'none'
          })
        }
        
        _page.setData({
          loadText: "數據請求中",
          loading: true,
          ranklist: ranklistBefore.concat(eachData),
          loadText: "加載更多",
          loading: false,
        });
      }
    })
  }
});