微信小程式實作清單上拉加載,自動适應螢幕

1.視圖層wxml

<view class="page__bd">

    <!-- 清單渲染 -->
    <block wx:for="{{goodsList}}" wx:key="goodsId">
      <view class="placeholder goodsItem">
        <image src="../../images/goods.jpg" mode="center" class="goodsImg"></image>
        <view class="goodsDescItem">
          <view class="goodsName">{{item.goodsTitle}}</view>
          <view class="goodsPrice">
            <icon class="fa fa-jpy priceLogo"{{item.goodsPrice}}</view>
          <view class="weui-flex">
            <view class="weui-flex__item">
              <view class="placeholder">
                <view class="goodsType">{{item.goodsType}}</view>
              </view>
            </view>
            <view class="weui-flex__item">
              <view class="placeholder">
                <view class="goodsTime">{{item.goodsTime}}</view>
              </view>
            </view>
          </view>
        </view>
      </view>
    </block>

    <view class="showLoad">
      <view class="weui-loadmore weui-loadmore_line">
        <view class="weui-loadmore__tips weui-loadmore__tips_in-line loadDesc">資料加載完成</view>
      </view>
    </view>

    <view class="weui-footer">
      <view class="weui-footer__text">Copyright ©2017-2018 ahut</view>
    </view>

  </view>      

2.視圖層wxss

/*設定商品展示項*/

.goodsItem {
  background-color:#fff;
  border-radius:10px;
  /*這裡的355rpx非常重要,(355+左邊距10rpx+右邊距10rpx) * 2 = 750rpx(固定值)*/
  width:355rpx;
  margin:10rpx;
  float: left;
}

/*設定商品描述資訊的内邊距*/

.goodsDescItem {
  padding:0px 10px 10px;
}

/*商品圖檔*/

.goodsImg {
  width:100%;
  height:150px;
  border:1px solid #eee;
  border-radius:10px;
}

/*商品名稱*/

.goodsName {
  font-size:14pt;
}

/*商品價格*/

.goodsPrice {
  font-size:14pt;
  color: red;
}

/*商品類别*/

.goodsType {
  font-size:11pt;
  color:#888;
}

/*商品上架時間*/

.goodsTime {
  font-size:11pt;
  color:#888;
}

/*價格圖示*/

.priceLogo {
  color: red;
  margin:10px 2px 0px 0px;
}

/*清除資料加載完成提示兩邊的浮動*/

.showLoad {
  padding-top:1px;
  clear: both;
}

/*設定資料加載完成提示樣式*/

.loadDesc {
  background-color:#f8f8f7;
}      

3.邏輯層js

data:{
    loadNumber: 0,//加載次數
    goodsList: [
      { goodsId: '1', goodsTitle: '玩具熊1', goodsPrice: '200.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' },
      { goodsId: '2', goodsTitle: '玩具熊2', goodsPrice: '200.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' },
      { goodsId: '3', goodsTitle: '玩具熊3', goodsPrice: '200.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' },
      { goodsId: '4', goodsTitle: '玩具熊4', goodsPrice: '200.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' }
    ],
    goodsList1: [
      { goodsId: '5', goodsTitle: '玩具熊5', goodsPrice: '200.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' },
      { goodsId: '6', goodsTitle: '玩具熊6', goodsPrice: '200.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' },
      { goodsId: '7', goodsTitle: '玩具熊7', goodsPrice: '200.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' },
      { goodsId: '8', goodsTitle: '玩具熊8', goodsPrice: '200.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' }
    ],
    goodsList2: [
      { goodsId: '21', goodsTitle: '玩具熊9', goodsPrice: '300.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' },
      { goodsId: '22', goodsTitle: '玩具熊10', goodsPrice: '300.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' },
      { goodsId: '23', goodsTitle: '玩具熊11', goodsPrice: '300.00', goodsType: '毛絨玩具', goodsTime: '2017-6-12' }
    ]
}

onReachBottom: function ()//上拉加載
    wx.showLoading({
      title: '正在加載',
    })
    //加載次數加一
    this.setData({
      loadNumber: this.data.loadNumber + 1
    })
    if (this.data.loadNumber == 1) {
      this.setData({
        goodsList: this.data.goodsList.concat(this.data.goodsList1)//将傳回的資料拼接到現有資料後面
      });
    } else if (this.data.loadNumber == 2) {
      this.setData({
        goodsList: this.data.goodsList.concat(this.data.goodsList2)//将傳回的資料拼接到現有資料後面
      });
    }
    setTimeout(function ()
      wx.hideLoading()
    }, 1000)
  }      

4.最終效果圖