channel_business/components/tabbar/tabbar.js

// components/tabbar/tabbar.js
const app = getApp()
Component({
  /**
   * 组件的属性列表
   */
  properties: {
    currentIndex: {
      type: String,
      value: '0',
    }
  },

  /**
   * 组件的初始数据
   */
  data: {
    list: [
      {
        text: "对话",
        iconPath: "/images/tabbar/tabbar_1.png",
        selectedIconPath: "/images/tabbar/tabbar_1.png",
        dot: true
      },
      {
        text: "设置",
        iconPath: "/images/tabbar/tabbar_2.png",
        selectedIconPath: "/images/tabbar/tabbar_2.png",
        badge: '99+'
      }
    ]
  },

  /**
   * 组件的方法列表
   */
  methods: {
    tabChange(e) {
      console.log('tab change--aa', e)
    }
  }
})