这个是我的代码   <wx-open-launch-weapp :appid="appid"  :username="username" path="pages/new_index/index/index" @launch="launch()" @error=errorMsg()>

      <div v-is="'script'" type="text/wxtag-template" style="display: block" id="launch-btn">

                     <button>打开小程序</button>

                    </div>

    </wx-open-launch-weapp>