wxhuanart/miniprogram/custom-tab-bar/index.ts

import TabMenu from './tabsets'
Component({
  data: {
    active: 0,
    list: TabMenu,
    theme: {
      custom: {
        colorPrimary: '#eda92a',
      },
    },
    height: 0,
  },

  lifetimes: {
    // attached() {
    //   wx.createSelectorQuery()
    //     .in(this)
    //     .select('.t-tab-bar')
    //     .boundingClientRect((rect) => {
    //       if (rect) {
    //         console.log(rect)
    //         this.setData({
    //           height: rect.height,
    //         })
    //       }
    //     })
    //     .exec()
    // },
  },

  methods: {
    onChange(event: WechatMiniprogram.CustomEvent<{ value: string }>) {
      const { value } = event.detail
      wx.switchTab({
        url: (value.startsWith('/') ? '' : '/') + value,
      })
    },

    init(func: Function | null = null) {
      const page = getCurrentPages().pop()
      const route = page ? page.route.split('?')[0] : ''

      const active = this.data.list.findIndex(
        (item) =>
          (item.pagePath.startsWith('/') ? item.pagePath.substr(1) : item.pagePath) === `${route}`,
      )
      this.setData({ active }, () => {
        func && func()
      })
    },
  },
})