.top域名可以开发小程序

{
  "pages": [
    "pages/index/index",
    "pages/detail/detail"
  ],
  "window": {
    "backgroundTextStyle": "light",
    "navigationBarBackgroundColor": "#fff",
    "navigationBarTitleText": "My App",
    "navigationBarTextStyle": "black"
  },
  "networkTimeout": {
    "request": 10000,
    "downloadFile": 10000
  },
  "navigateToMiniProgramAppIdList": [
    "your-mini-program-app-id"
  ],
  "setting": {
    "packNpmManually": true,
    "packNpmRelationList": [
      {
        "packageJsonPath": "./package.json",
        "miniprogramRoot": "./miniprogram/"
      }
    ]
  }
}

<button bindtap="navigateToMiniProgram">跳转到小程序</button>

Page({
  navigateToMiniProgram() {
    wx.navigateToMiniProgram({
      appId: 'your-mini-program-app-id',
      path: 'pages/index/index',
      extraData: {
        foo: 'bar'
      },
      envVersion: 'release',
      success(res) {
        console.log('跳转成功', res);
      },
      fail(err) {
        console.error('跳转失败', err);
      }
    });
  }
});