mini_program/pages/index/index.js

// index.js
// 获取应用实例
const app = getApp()

Page({
  data: {
    active: 1,
    tabList:[{id:1,name:'已挂牌'},{id:2,name:'拟挂牌'},{id:3,name:'土地推介'},{id:4,name:'报告'},{id:5,name:'研究'}],
    list:[
      {title:'CQ210003-九龙坡区大桥石S区十组245-2',timer:'2021/01/01',state:1},
      {title:'CQ210003-九龙坡区大桥石S区十组245-2',timer:'2021/01/01',state:2},
      {title:'CQ210003-九龙坡区大桥石S区十组245-2',timer:'2021/01/01',state:3},
      {title:'CQ210003-九龙坡区大桥石S区十组245-2',timer:'2021/01/01',state:2},
      {title:'CQ210003-九龙坡区大桥石S区十组245-2',timer:'2021/01/01',state:3},
      {title:'CQ210003-九龙坡区大桥石S区十组245-2',timer:'2021/01/01',state:1},
    ],
  },
  onShow(){
    if (typeof this.getTabBar === 'function' &&
        this.getTabBar()) {
        this.getTabBar().setData({
          selected: 2
        })
      }
  },
  tabDowm(e){
    let active = e.currentTarget.dataset.id
    if(active!==this.data.active){
      this.setData({active})
    }
  }
})