<form report-submit='true' bindsubmit='butSubmit'>  <slot name="form">slot>  <button class='bnt' form-type='submit' bindgetuserinfo="getUserInfo" lang="zh_CN" bindgetphonenumber="getPhoneNumber" open-type="{{openType}}">    <slot name="but">slot>  button> form> 向slot 中插入input。form获取不到它的值？怎么解决？  部分代码：     <authorizeView bind:onBut="onNext" >       <view slot="form" class="authorizeView">         <image mode='aspectFill' class='team_logo'></image>         <view class='team_logo_tip'>上传队徽</view>         <view class='item'>           <view class='name'>球队名称</view>           <input bindinput="onGroupName" name="group_name" maxlength="{{15}}" placeholder='取个好听的名字吧（15个字以内)' placeholder-class='inputPlaceholder'></input>         </view> 这里面的input