案例：
html:

  <view ><view ><view  class="guzhang" wx:for="{{inputs}}" wx:key="id" wx:for-item="item" wx:for-index="index"><view class="huanhang"><view class="fontBold">故障描述{{index+1}}：</view><view class="fontBold"><text wx:if="{{!index== 0}}" class="carshanchu" bindtap="deleteInput" data-index="{{index}}">删除</text><text class="carinfor" bindtap='addInput'  data-index="{{index}}">添加</text></view></view><textarea class="textareb" maxlength="-1" data-id="{{item.id}}" bindinput='handleInput' placeholder=