carInsightSystem_wxapp/pages/index/index.js

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

Page({
  data: {
    active: 0,
    navData: [{
        text: '数据',
        component: 'data-child'
      },
      {
        text: '传播媒体',
        component: 'media-child'
      },
      {
        text: '传播声量',
        component: 'sound-child'
      },
      {
        text: '晴雨表',
        component: 'barometer-child'
      },
      {
        text: '尾翼洞察',
        component: 'insight-child'
      },
      {
        text: '事件',
        component: 'event-child'
      },
      {
        text: '热议图谱',
        component: 'atlas-child'
      },
      {
        text: '用户画像',
        component: 'portrait-child'
      },
      {
        text: '热销排行',
        component: 'ranking-child'
      },
    ],
  },

  onShow() {
    this.getTabBar().init();
  },
  onLoad: function (options) {

  },
  changeTab(val) {
      let n = val.detail.index;
      this.setData({
          active: n
      })
  }
})