iconfont使用数组遍历样式和动态改变样式

<div class="cell-list" :class="{cellActive:index==num}" v-for="(item,index) in menList" :key="index"
                    @click="menubtn(index,item.name)">
                      <i class="iconfont" :class="[item.Icon,{cellActive:index==num}]" ></i>
                      <span class="cell-span" :class="{cellActive:index==num}">{{item.name}}</span>
                    </div>


methods: {
            menubtn(index,name){
                console.log(name)
                this.num = index
                
            }