微信小程序添加底部导航栏

  "tabBar": {
    "selectedColor": "#1296db",
    "list": [
      {
        "pagePath": "pages/index/index",
        "text": "首页"
      },
      {
        "pagePath": "pages/setting/setting",
        "text": "设置"
      },
      {
        "pagePath": "pages/help/help",
        "text": "帮助"
      }
    ]
  }