minixyz/pages/index/index.js

let app = getApp();
const getReq = require('./../../config.js').getReq;

Page({
  data: {
    tabs: [],
    prop_special:[],
    surplus_special:[],
    special_datas: {},
    summery: [],
    isScroll:false,
    isSendProp:false
  },

  onShow: function() {
    if (app.globalData.backLogin) {
      app.globalData.backLogin = false;
      wx.reLaunch({
        url: "/pages/index/index"
      });
    }
  },

  onLoad: function () {
    this.req_tabs();
  },

  req_tabs(){
    let self = this
    getReq({
      act: 'index',
      op: 'tabs'
    }, function (res) {
      if (res.code == 200) {
        self.getDatas(res.datas.tabs[0].special_id);
        self.setData({
          tabs: res.datas.tabs
        });
      }
    })
  },
  onMyEvent: function (e) {
    this.setData({
      prop_special:[],
      surplus_special:[],
      special_datas: {},
      summery: []
    });
    this.getDatas(e.detail.item.special_id)
  },

  getDatas(special_id) {
    wx.showLoading({
      title: '加载中'
    });
    let self = this;
    getReq({
      act: 'special',
      op: 'index',
      special_id,
      page: 10,
      curpage: 1
    }, function (res) {
      if (res.code == 200) {
        let prop_special = res.datas.special_list;
        let sent_down_special = prop_special.splice(0, 8);
        self.setData({
          surplus_special: prop_special,
          prop_special: sent_down_special,
          special_datas: res.datas,
          summery: res.datas.summary
        });
      }
      setTimeout(function () {
        wx.hideLoading()
      }, 1000)
    })
  },
  onPageScroll(e){
    clearTimeout(this.showTop);
    this.showTop = setTimeout(()=>{
      let scrollTop = e.scrollTop;
      if (scrollTop >= 300) {
        this.setData({
          isScroll: true
        })
      }
      else {
        this.setData({
          isScroll: false
        })
      }
    },100);
  },
  backTop(){
    wx.pageScrollTo({
      scrollTop: 0,
      duration: 300
    })
  },
  onShareAppMessage: function () {
    return {
      title:"熊猫美妆小程序",
      path:"/pages/index/index"
    }
  },
  onReachBottom: function(){
    if (this.data.isSendProp){
      return;
    }
    
    let surplus_special_num = this.data.surplus_special.length;
    if (surplus_special_num > 0){
      // wx.showLoading({
      //   title: '加载中'
      // });
      this.setData({
        isSendProp:true
      });
      this.data.isSendProp = true;
      let prop_special = this.data.surplus_special;
      let sent_down_special = prop_special.splice(0, 8);
      this.setData({
        surplus_special: prop_special,
        prop_special: this.data.prop_special.concat(sent_down_special)
      })
      this.setData({
        isSendProp: false
      });
      // wx.hideLoading();
    }
  }
})