<wx-open-launch-weapp       id="xxx"       username="gh_xxxxxxxxx"       path="pages/index/index.html"       @ready="btnReady"       @launch="btnLaunch"       @error="btnError"     >       <script type="text/wxtag-template">         <style>           .btn {             width: 300px;             height: 100px;             min-height: 100px;             line-height: 100px;             text-align: center;             color: #444;             font-size: 14px;             display: inline-block;             background: #fff100;             border-radius: 100px;             border: 0;             padding: 0 10px;           }         </style>         <button class="btn" >打开小程序</button>       </script>     </wx-open-launch-weapp>