dw_lotter_draw/pages/allParticipant/allParticipant.js

const {getAllLotteryUser} = require('../../utils/API.js')
let raw_avatars = []
let cur_page = 1
let has_more = true
Page({

  data: {
    loading: false,
    lottery_user_count: 0,
    lottery_user_avatars: []
  },

  onLoad: function (query) {
    const {id} = query
    getAllLotteryUser(id)
    .then(data => {
      const {
        lottery_user_count,
        lottery_user_avatars
      } = data.data
      raw_avatars = lottery_user_avatars
      this.setData({
        lottery_user_count,
        lottery_user_avatars: raw_avatars.slice(0, cur_page * 24)
      })
    })
  },

  loadMore(){
    if(has_more) {
      cur_page++
      let result = raw_avatars.slice(0, cur_page * 24)
      if(result.length === this.data.lottery_user_avatars.length) {
        has_more = false
        return
      }
      this.setData({
        lottery_user_avatars: result
      })
    }
  }
})