ittwxcust/custom-tab-bar/index.js

const app = getApp()
Component({
  data: {
    selected: 2,
    color: "#7A7E83",
    selectedColor: "#45A6B5",
    list: [{
      pagePath: "/pages/index/index",
      iconPath: "/imaes/home_nor@2x.png",
      selectedIconPath: "/imaes/home_sel@2x.png",
      text: "首页"
    }, {
      pagePath: "/pages/report/report",
      iconPath: "/imaes/baogao_nor@2x.png",
      selectedIconPath: "/imaes/baogao_sel@2x.png",
      text: "报告"
    },{
      pagePath: "/pages/my/my",
      iconPath: "/imaes/me_nor@2x.png",
      selectedIconPath: "/imaes/me_sel@2x.png",
      text: "我的"
    }]
  },
  attached() {
  },
  ready () {
    this.setData({
      selected: app.globalData.selectedInex
    })
  },
  methods: {
    switchTab(e) {
      const data = e.currentTarget.dataset
      const url = data.path
      if (data.index == 0 || data.index == 1) {
        if (!app.globalData.userInfo.login) {
          wx.showToast({
            title: '请先授权登录',
            icon: 'error'
          })
          return false
        } else {
          app.globalData.selectedInex = data.index
          wx.switchTab({url})
        }
      } else {
        app.globalData.selectedInex = data.index
        wx.switchTab({url})
      }
    }
  }
})