• 当前 Bug 的表现（可附上截图）

• 预期表现

,要发送到执行绑定事件，bindconfirm=“bindConfirm”

• 复现路径

• 提供一个最简复现 Demo

<form bindsubmit=“bindConfirm”>

<view class=‘speak’ style=‘bottom:{{keyBarHeight + “px;”}}’>

<image class=‘photo’ src=’/images/im_photo.png’ catchtap=‘selPhoto’></image>

<input type=‘text’ class=‘input’ name=“textarea” placeholder=‘输入内容’ cursor-spacing=’{{iPhone ? “14” : “10”}}’ confirm-type=‘send’ confirm-hold=‘true’  value=’{{msgContent}}’ auto-height=‘true’ bindconfirm=“bindConfirm” bindfocus=‘textFocus’ bindblur=‘textBlur’></input>

<button form-type=“submit” class=‘sub’>发送</button>

</view>

</form>