微信小程序实现下拉加载更多的源码

oadmore 加载更多（分页加载） 当用户打开一个页面时，假设后台数据量庞大时，一次性地返回所有数据给客户端，页面的打开速度就会有所下降，而且用户只看上面的内容而不需要看后面的内容时，也浪费用户流量，基于优化的角度来考虑，后台不要一次性返回所有数据，当用户有需要再往下翻的时候，再加载更加数据出来。 业务需求： 列表滚动到底部时，继续往上拉，加载更多内容

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

    .......   5491769  2017-03-06 18:34  wechat-wxapp-minidemo-master\demoinfo\demo--上拉加载.gif

    .......   3974299  2017-03-06 18:34  wechat-wxapp-minidemo-master\demoinfo\demo--登录页.gif

    .......   4008756  2017-03-06 18:34  wechat-wxapp-minidemo-master\demoinfo\demo--轮播图2.gif

    .......       939  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--上拉加载\app.js

    .......       262  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--上拉加载\app.json

    .......       366  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--上拉加载\app.wxss

    .......      2424  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--上拉加载\images\icon-loading.png

     文件       2993  2017-11-09 09:31  wechat-wxapp-minidemo-master\demolist\demo--上拉加载\pages\index\index.js

     文件         78  2017-11-09 09:34  wechat-wxapp-minidemo-master\demolist\demo--上拉加载\pages\index\index.json

     文件       1108  2017-11-09 09:43  wechat-wxapp-minidemo-master\demolist\demo--上拉加载\pages\index\index.wxml

     文件       1809  2017-11-09 12:08  wechat-wxapp-minidemo-master\demolist\demo--上拉加载\pages\index\index.wxss

    .......       276  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--上拉加载\README.md

    .......       861  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--上拉加载\utils\util.js

    .......      1137  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--登录页\app.js

    .......       215  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--登录页\app.json

    .......         0  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--登录页\app.wxss

    .......      1292  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--登录页\pages\images\key.png

    .......    368125  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--登录页\pages\images\loginLog.jpg

    .......      1738  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--登录页\pages\images\name.png

    .......       718  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--登录页\pages\login\login.js

    .......       984  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--登录页\pages\login\login.wxml

    .......      1002  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--登录页\pages\login\login.wxss

    .......         0  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--登录页\README.md

    .......       939  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--轮播图2\app.js

    .......       259  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--轮播图2\app.json

    .......       366  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--轮播图2\app.wxss

    .......    116581  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--轮播图2\images\T003R720x288M000002b6cr34US2Uc.jpg

    .......    135404  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--轮播图2\images\T003R720x288M000002Rz6eK3WJdBA.jpg

    .......     65569  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--轮播图2\images\T003R720x288M000002y1PJF1pOKM1.jpg

    .......    148767  2017-03-06 18:34  wechat-wxapp-minidemo-master\demolist\demo--轮播图2\images\T003R720x288M0000042ttcW1yfrpE.jpg

............此处省略28个文件信息