微信支持H5跳转App、跳转小程序

wx.config({
  // 其它配置不变， openTagList配置可使用的开放标签, 
  openTagList: ['wx-open-launch-app, wx-open-launch-weapp']
})

<wx-open-launch-weapp
  id="launch-btn"
  // 小程序id
  username="gh_xxxxxxxx"
  // 小程序路径
  path="/a/b/c?d=1&e=2#fg"
>
  <template>
    <style>.btn { padding: 12px }</style>
    <button class="btn">打开小程序<button>
  </template>
</wx-open-launch-weapp>

<wx-open-launch-app
  id="launch-btn"
  // 移动应用appid
  appid="your-appid"
  // 额外信息, 客户端自行解析
  extinfo="your-extinfo"
>
  <template>
    <style>.btn { padding: 12px }</style>
    <button class="btn">App内查看</button>
  </template>
</wx-open-launch-app>

<script>
  var btn = document.getElementById('launch-btn');
  // 调起成功回调
  btn.addEventListener('launch', function (e) {
    console.log('success');
  });
  // 调起失败回调
  btn.addEventListener('error', function (e) {
    console.log('fail', e.detail);
  });
</script>