<div class="nav-list">

<div class="nav-menuitem" v-for="value in this.navitemdata">
   <span class="nav-item-title" @click="toggleItem(value.id)">{{value.name}}</span>
   <i v-bind:class=this[value.id+'arrow']></i>
   <div v-bind:class="value.id+'detail'" v-for="detail in value.children">
      <p class="nav-detail">{{detail.name}}</p>
   </div>
</div>

</div>

data:
xxxarrow:""

由于for導(dǎo)致this指向改變，所以以上的 v-bind:class=this[value.id+'arrow'] 是不對(duì)的，那么應(yīng)該怎么樣才能把數(shù)據(jù)綁定上去？

我知道原因了。。但是我不會(huì)改，拼接出來的"value.id+'detail'"是字符串類型，所以直接渲染了