vue 動態綁定 id

<div class="layui-tab-item" :class="{'layui-show': key === 0}" v-for="(cur, key) in eventData.event" :key="key">
  <div class='layui-input-block'>
    <ul class="ztree treeBox" :id="`modelTree${key}`"></ul>  <!--動態綁定ID-->
  </div>
</div>