app.json
  "tabBar": {
    "custom": true,
    "list": [{
        "pagePath": "pages/home/index",
        "text": "首頁(yè)"
      },
      {
        "pagePath": "pages/my/index",
        "text": "我的"
      }
    ]
  }

Component({
  data: {
    value: 'home',
    list: [{
        value: 'home',
        label: '首頁(yè)',
        icon: 'home'
      },
      {
        value: 'my',
        label: '我的',
        icon: 'user'
      },
    ],
  },
  lifetimes: {
    ready() {
      const pages = getCurrentPages();
      const curPage = pages[pages.length - 1];
      if (curPage) {
        const nameRe = /pages\/(\w+)\/index/.exec(curPage.route);
        if (nameRe === null) return;
        if (nameRe[1] && nameRe) {
          this.setData({
            value: nameRe[1],
          });
        }
      }
    },
  },
  methods: {
    handleChange(e) {
      wx.switchTab({
        url: `/pages/${e.detail.value}/index`
      });
    }
  }
});

{
  "component": true,
  "styleIsolation": "apply-shared",
  "usingComponents": {
    "t-tab-bar": "tdesign-miniprogram/tab-bar/tab-bar",
    "t-tab-bar-item": "tdesign-miniprogram/tab-bar-item/tab-bar-item"
  }
}

<t-tab-bar value="{{ value }}" theme="tag" split="{{ false }}" bind:change="handleChange">
  <t-tab-bar-item icon="home" value="home">首頁(yè)</t-tab-bar-item>
  <t-tab-bar-item icon="user" value="my">我的</t-tab-bar-item>
</t-tab-bar>

wx.navigateTo({
      url: '/pages/game/index?id=1',
    })

  "pages": [
    "pages/home/index",
    "pages/my/index",
    "pages/game/index"
  ],